Autocad lt 2021 download free
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To make autocad lt 2021 download free with precise distances, you need to use the direct distance entry method, which is explained in dowhload next section. The next example will require you to specify two geometries on which the circle will be tangent and then the radius of the circle:. Email Address Email is required Entered email is invalid.❿
If, for any reason, you don’t want to use this Dynamic Input tool, then click on the Dynamic Input icon again on the status bar to deactivate it. So, now you know that Dynamic Input makes it easy to add distances and angles, let’s move on to learning about another status bar mode called ortho mode, which makes rendering horizontal and vertical lines a breeze.
We will discuss this status bar mode in the next section. So far, we have used the line command to make geometries in arbitrary directions. But if you want to restrict the direction of your lines to horizontal and vertical directions, then you can use ortho mode. Ortho mode restricts the movement of the cursor to a horizontal or vertical direction only, so with ortho mode active , you will be able to make lines only in a horizontal or vertical direction.
To activate ortho mode, you can use the following workflow:. You can click on different points to make the geometry but the lines will always remain horizontal or vertical. To deactivate ortho mode, simply click on its icon in the status bar again or press the F8 function key on your keyboard. Just like ortho mode, there is another mode in the status bar that lets you make lines on any angle you specify.
This mode is called polar tracking and we will discuss it in the next section. Polar tracking allows you to make geometries at any angle you want. To activate polar tracking, click on its icon in the status bar, as in the following screenshot. You can also activate polar tracking by pressing the F10 function key on your keyboard:.
But this is not all. In this case, you can assign a different angle to polar tracking mode and it will start restricting your lines to those angles. After making your selection, move your cursor again to the drawing area and now you will find a green tracking vector after an interval of every 30 degrees or at every angle that is a multiple of 30 degrees as shown in the following figure:. These status bar options allow you to make geometries. To make drawings, we will use a combination of these status bar tools as and when needed.
So, now that we know the methods for making simple line drawings with precision in AutoCAD, we will move on to learning about other geometries, such as circles, arcs, and polygons. You can select the Circle command from the Draw panel in the Home tab, or you can also use its command, C. When you click the Circle flyout, you will find six different methods for making a circle in AutoCAD:. The first option in the Circle flyout will let you make a circle with center and radius values.
The following is the workflow for making a circle using a center and radius:. So, these two methods are nearly identical, the only difference being the radius or diameter value that you need to make the circle. The methods shown in the next section are, however, completely different and you don’t even need the radius or diameter value for them. The next circle option, 2-Point , requires you to specify two points for making the circle.
For this, I will use the triangle shown here. Here, AB is 10 units and AC is 8 units in length:. In the following example, I will make a 2-point circle on the AC line of our sample triangle:. The next example, a 3-Point circle, will need three points to make the circle:. The next set of options in the Circle flyout will let you make the circle with the tangent and radius as references.
We will discuss this next. The next example will require you to specify two geometries on which the circle will be tangent and then the radius of the circle:. In the last circle option, Tan, Tan, Tan , you need to only specify three geometries on which the circle will be tangent:.
So, in this way, you can make circles using different methods and the selection of the method depends on the dimensions provided and the type of geometry you are required to make. In the next section, we will explore the arc tool, which is basically a part of the circle, but the workflow of making an arc is very different from that of a circle. An arc is a segment of a circle and there are lots of ways that you can make one in AutoCAD. The method that you use to make the arc depends on the type of geometry that you want to make.
In this case, I will explain some of the most frequently used methods of making an arc and I will use this right-angled triangle with the A , B , and C vertices in all of the following examples:.
Select the Arc tool from the Draw panel in the Home tab. You can also use its command: ARC :. The command line will now prompt you to select the first point of the arc. Click on the A point of the triangle, then specify the second point as the B point, and the third point as the C point. An arc connecting the A , B , and C points will be formed, as shown:. This was the most basic and obvious way of making an arc in AutoCAD, but there are lots of other ways of making arcs as well.
As the name of the command suggests, you need to specify the start point first, then the center point, and lastly, the end point. Click on the B point to specify the start point, then click on the midpoint of the BC line, which will be taken as the center point of the arc, and lastly, click on the C point.
An arc that starts from the B point with the center on the midpoint of the BC line and ends on the C point will be formed, as shown:. In this case, the arc is formed outside the triangle because the arc will be formed in an anticlockwise direction with respect to the start point, which is the B point.
If you select C as the start point and B as the end point, you will get your arc on the opposite side. Alternatively, you can also press and hold the Ctrl key while making the arc to change the direction of the arc, irrespective of the start and end points. The next arc tool that I will tell you about is Start, End, Radius.
For this arc tool, you need to specify the start point, end point, and radius value. The direction of the arc will be determined by the order in which you select the start and end points. To make this arc, I will select the option from the Arc drop-down menu of the Draw panel and click on the B point, and then on the A point. Now, the command line will prompt you to specify the radius of the arc.
Enter the radius value in the command line and press Enter. The final arc will look like this:. The diameter of the arc, in this case, should always be greater than the length of the AC line, otherwise it will not be possible to construct the arc. For our example, I have used a diameter of 16 units or a radius of 8 units and the length of the AC line is In this case, you too can change the order of the start and end points to reverse the direction of the arc, or you can press and hold the Ctrl key while making the arc to reverse the direc tion of the arc.
The last arc in this series of arc options that I will explain here is Center, Start, End. By now, you must have understood the workflow of making the arc. In this case, you need to click on the center point of the arc , then the start point, and lastly, the end point. Select the tool from the Arc drop-down menu in the Draw panel and click on the midpoint of the AB line as the center point. Now, click on the A point and then click on the B point.
The arc shown here will be made:. Here, we can also reverse the order of selection of the start and end points to reverse the direction of the arc. For example, you can select the midpoint of the AB line as the center of the arc, then B as the start point, and then A as the end point, and the arc will be formed inside the triangle. You can also press and hold the Ctrl key to reverse the direction of the arc while making it. In this case, the AB line will be the diameter of the arc. So, these are the most frequently used arc tools from the list, but there are also other tools in the list and I encourage you to explore the remaining arc tools yourself.
After arcs, we will explore the Rectangle command, which is another frequently used draw tool. You can make a rectangle or square using lines, but we have this direct tool as well, which enables us to make rectangles very easily with fewer clicks.
The rectangle command will help you make a four-sided rectangle or square. There are a few different ways of making a rectangle using the rectangle tool. We will first learn how to make a rectangle using coordinates and later, we will also see the method of making a rectangle using Dynamic Input. Let’s begin by using coordinates to make our rectangle. To make a rectangle using coordinates, you need to deactivate the Dynamic Input option from the status bar.
To turn it off, click on its icon in the status bar or press the F12 function key:. Here, I will make a rectangle that starts from the origin and has a length of 8 units and a width of 3 units:.
In this case, the first point was the lower-left point of the rectangle, shown as 1 in the following diagram, which is also the origin, and the second point was the upper-right vertex with coordinates 8,3 , shown as 2 in the diagram:.
For point 2 , we added 8,3 , where 8 is the length as well as the X coordinate value and 3 is the height of the rectangle as well as the Y coordinate. In the previous example, the rectangle started from the origin; hence, the coordinates of point 2 also represented the length and width.
In this case, we have used the sign before the point 2 coordinates because the first point was chosen randomly from the drawing area and it was not on the origin. So, adding the sign makes point 1 the origin for this particular case and the values of point 2 will be measured with respect to the first point.
If you start the Rectangle command from any random point and add the second point as 8,3 , then the second point of the rectangle will end up on the absolute 8,3 point, with respect to the absolute coordinate system, and the length and width of the rectangle, in this case, won’t be 8 and 3 , respectively. Using Dynamic Input skips all these issues that we have with coordinates and lets you directly add the length and width of the rectangle, so you will have your rectangle with those dimensions.
Before we make a rectangle using the Dynamic Input status bar option, we need to first activate it:. The rectangle will be made with a length of 10 units and a width of 5 units.
In this case, we used a positive value of X and Y that is, 10 and 5 , but you can use negative values as well to make the rectangle in different quadrants with respect to the first point. For example, the and 5 units will make the rectangle in the second quadrant, and -5 will make it in the third, and 10 and -5 will make the rectangle in the fourth quadrant. The following illustration will clarify this point further:.
The rectangle is a four-sided polygon but, in AutoCAD, you can make other polygons, such as a pentagon, hexagon, and heptagon as well. You can even make a polygon with tens or hundreds of sides.
You can do all of this using the polygon command, which we will explore next. Polygons are closed geometries made with three or more sides.
The smallest polygon is a triangle and the largest polygon is a circle, which is made up of an infinite number of sides. The Polygon tool is in the Draw panel of the Home tab in the expanded rectangle flyout, as in the preceding screenshot. Before we start making a polygon, we need to learn about the two types of polygon options, namely inscribed, and circumscribed, in AutoCAD.
When you use the polygon command, you are presented with the inscribed and circumscribed options, so before we dig deeper into the polygon tool, let’s understand what inscribed and circumscribed geometries are. In the following diagram, the first polygon is inscribed in a circle with a radius equal to the length of the green line.
In this case, the vertices of the polygon are touching the circumference of the circle. In the second case, the polygon is circumscribed about the circle, which has a radius equal to the length of the green line and in this case, the midpoints of the sides of the polygon are touching the circumference of the circle:. When making polygons, AutoCAD will prompt you to specify the radius of the polygon, which is essentially the radius of the inscribed or circumscribed polygon. The type of polygon that you need to make depends on the dimensions provided in the drawing.
So, now that you know what an inscribed and a circumscribed polygon are, we are ready to make our first polygon. In this case, I will make a pentagon, which is a polygon with five sides, and I will use a polygon inscribed in a circle:. You will notice that an inscribed polygon with a radius of 5 units will be rendered.
In this case, the radius of the polygon is the radius of the inscribed circle that this polygon is made in. You can use a similar process to make a polygon that is circumscribed about the circle. Although these two options may seem like the only options for making a polygon in AutoCAD, its not always possible to have the radius of inscribed or circumscribed circles.
If you only have the side length of the polygon, then you can use this next method to make a polygon using the side length. A polygon with the required edge length will be made. In this case, you were not required to specify the inscribed or circumscribed circle as the reference. Now that we know about some of the basic draw tools that make a drawing, let’s move on to learning about a few of the basic modify tools. In this case, we will use the Move tool to move the circle from one of the vertices of the triangle shown in the previous diagram down to the other:.
To copy the circle on all three vertices, you can use the Copy tool from the Modify panel of the Home tab, or you can use its command, CO :. To end the command, press Enter again. The final drawing after copying the circles on all three vertices will look like this:. So, now that you know about the basic drawing modification tools, such as Move and Copy, let’s explore some other modification tools.
We will discuss the Rotate tool next. As the name suggests, the Rotate command can be used to rotate an object about a point. In this case, I will use a door symbol to explain the command, which is shown here:.
The Rotate command rotates the selected object from its base point and you can rotate the object from its original angle or also by using a reference angle. In the following sections, we will discuss all the methods for using Rotate commands. Let’s start with the simple rotate feature. Currently, the door is horizontal and we can rotate it to change its rotation angle with respect to its current angle, which is 0 degrees, as the door is horizontal:.
The door will rotate to an angle of 30 degrees, with respect to the current angle of 0 degrees, and the final door should look like this:. In a similar way, you can specify different base points and rotation angles to get different results.
The Copy option, which shows up when you select the base point in the rotate command, will let you rotate a copy of the original drawing:. To use the Copy option, type C when the command line appears as in the previous screenshot and press Enter. This will select the Copy subcommand from the command line. You can also click on the highlighted Copy text from the command line to select this option. Now, if you rotate the door, you will get a copy of the original door and the original door will also remain in its place.
After using the Copy option in the preceding example, and a rotation angle of 90 degrees, we ended up with two doors that look like this:. When an object is at any known angle, it is easy to rotate it to any other angle, but if your object is at an unknown angle and you still want to rotate the object to any known final angle, then you can use Rotate with the Reference option, which we will discuss next. In the previous case, the door symbol was at an angle of 0 degrees perfectly horizontal and hence, its rotation angle can be specified pretty easily.
It is inclined to an unknown angle and so, to rotate this to any specific angle, we will use the rotate with reference option:. Here, the window symbol is inclined to a random angle with respect to the horizontal axis. Now, if you want to rotate this window symbol so that it becomes perfectly horizontal, then you need to use the Reference subcommand of the Rotate command. You will notice that the window will now become horizontal; that is, its angle will now be 0 degrees, as in the following diagram:.
In this case, by specifying the reference angle, you can make AutoCAD rotate the drawing to any specific angle with respect to the positive side of the X axis, even when the angle to which the object is inclined is unknown. The next modify command that we will discuss is Fillet and this command lets you add rounded corners. It may look like a tool that can make subtle changes to the drawing, but you will find it pretty useful as it not only makes rounded edges, but it also has other sets of useful features, which we will discuss in the next section.
The Fillet command can be used to add round corners to t he sharp edges of the drawing. For example, in this case, the fillets are added to the vertices of the A diagram, shown here, to make it look rounded in the corners, as shown in the B diagram:.
To use the Fillet command, select it from the Modify panel in the Home tab, as in the following screenshot, or use its command, F :. This diagram has been made with the Line command:. Using the following steps, we will add a fillet to the A vertex of this diagram:. You can also apply fillets on the open edges of the drawing. In the preceding example, the ED edge is open and we can close it with a rounded fillet or with a sharp vertex using the Fillet command:.
In this case, you can also use a radius value at the ED vertex and then, instead of merging at a point, a fillet with a specified radius will be made. While making the fillet, if you select the Polyline option from the command line, you can apply fillets on the multiple vertices of the drawing made with a polyline.
As an example, if you want to apply a fillet on all four vertices of a rectangle with a length of 10 and a width of 5 units, then you can use this workflow:. So, now you know about the features of the fillet tool and how it can be used to add not only rounded corners but also other modifications to a drawing. Let’s move on to the Modify command and explore one of the most frequently used modify tools, called Trim. This command lets you delete part of a drawing.
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