AutoCAD for Dummies: How to Draw a ARC – Part 2

This is the continuation of part 1 because this is a very long discussion and I don’t want to bore you. So the next method of drawing the arc is:

Start, End, Angle

Unlike the previous methods we have discussed so far, the arc will start on one point and the following is the end point (see Fig. 6) but the measurement of the arc will depend on the included angle. Again go back to the menu and choose Draw>Arc>Start, End, Angle. Then pick your first point on the screen then AutoCAD will prompt again: Specify end point of arc: Then after picking your end point AutoCAD will prompt again: Specify center point of arc or [Angle/Direction/Radius]: _a Specify included angle: In this sample, I used 90 degrees. Either you can type 90 on the command prompt or place your cursor on top of the first point which is 90 degrees on the polar angle. As you can see on the bottom right corner of the drawing below, the polar angle is illustrated. From the right quadrant going counter clockwise, the measurement is from zero, 90, 180, 270, 360 degrees.

Fig. 6

Start, End, Direction

To start making this arc, go to menu and choose Draw>Arc>Start, End, Direction. Then pick your first point on the screen then AutoCAD will prompt again: Specify end point of arc: Then after picking your end point AutoCAD will prompt again: Specify center point of arc or [Angle/Direction/Radius]: _d Specify tangent direction for the start point of arc: again AutoCAD is asking the direction, which is, the angular direction of the line from the first point of the arc. The sample drawing is approximately 45 degrees ( See Fig. 7 ).

Fig. 7

Start, End, Radius

Again to start making this one, this is very similar to the previous one but this time it is asking for the size of the radius. Go to menu and choose Draw>Arc>Start, End, Radius. Then pick your first point on the screen then AutoCAD will prompt again: Specify end point of arc: Then after picking your end point AutoCAD will prompt again: Specify center point of arc or [Angle/Direction/Radius]: _r Specify radius of arc: which means AutoCAD is asking for the radius length ( Fig. 8 ). You can either drag your cursor to specify for the radius length or type it in the command prompt.

Fig. 8

So this is the end of part 2 so I’ll not bore you. I’ll discuss the rest in part 3.

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