How to Copy an Angle
The use of angles in our world assists in making things even and neat. The copying of angles is used in building the homes in which we live and the buildings in which we work. The process allows us to draw perfect squares, rectangles and boxes and allows designers to make even patterns for the clothes we wear.
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Instructions
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1
Label the original angle. The point should be "A," and each ray, or line, coming from the point, should be labeled "B" and "C" respectively.
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2
Create a point labeled "Z" on your paper. Use your ruler to draw a ray from "Z." Label this ray "Y." It does not have to be the same length or parallel to your original angle.
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3
Place your compass point at "A" on your original angle. Open the compass a few degrees and draw an arch across rays "B" and "C." Label the points where the arc meets each ray as "D" and "E."
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4
Place the compass point at "Z" without changing the opening degree. Make a sweeping arch as you did between "B" and "C," crossing "Y" and the area above. Label the crossing point on "Y" as "W."
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5
Measure the distance between "D" and "E" by opening your compass to the same width.
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6
Use the measurement you have found from "D" and "E" with the compass. Place the point of the compass at point "W." Draw a small arch. This will create an "X" from the first arch drawn. Label this point "X."
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Draw a ray using a ruler from and through points "Z" and "X" to complete your new copied angle.
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Tips & Warnings
A stiffer compass with grooves to set degrees of angles makes measurement easier for copying angles.
It is not necessary to place lines parallel; using rays going in different directions can lead to confusion.
