Step 1: Draw a line BC and mark B as the vertex. Drawing Reflex Angles. Adding 360 degrees to –210 degrees gives you 150 degrees. -240+360=120 Since 120 is positive, you can stop here. P will be the angle's vertex. And we got it wrong. You can change your choices at any time by visiting Your Privacy Controls. Here’s what you do: Find a co-terminal angle by adding 360 degrees. It helps to draw or picture these angles as sectors of a circle. How To Construct A 45 Degree Angle Using A Compass And Ruler Constructing a 45 degree angle can be done by first constructing a 90 degree angle and then bisecting this 90 degree angle. Online angle measurement tool. Draw angles in semi-circles on either side of the diameter. Evidently AutoDesk decided we don't need any degrees past 180. Mark the angle with a small arc as shown below. We and our partners will store and/or access information on your device through the use of cookies and similar technologies, to display personalised ads and content, for ad and content measurement, audience insights and product development. Your head is probably spinning! Use Ruler - Draw a Line segment QR of any convenient length. So, to draw a 30 °, construct a 60 ° angle and then bisect it. Increase/decrease angle until the line segment is right above the other side. Note that a 720 degree rotation is not equivalent to a 0 degree rotation. This page shows how to construct (draw) a 30 degree angle with compass and straightedge or ruler. A Reflex Angle is more than 180° but less than 360°. Label the intersection of the arcs S. Connect Point S to Point P. So let's see what we-- oh, 155 degree angle, not 150 degree angle. Online angle meter. Or, in two steps, you can draw an Arc at the desired radius, of any length [or a Circle, and Break part of it out to make an Arc], and use LENGTHEN and its Total option to make it the length you want. View solution. Remember, there are 360 degrees in a circle, and think of an angle as a wedge of a pie chart. Therefore, the inverse-tangent of the rise divided by the run will give the angle. So what do you do if you’re asked to draw an angle that has a measure greater than 360 degrees? See the proof below for more on this. This angle starts at 0 on the x-axis and moves in clockwise because you’re finding a negative angle. To draw a line in AutoCAD you can use the command line length