Question

What are the steps for constructing a copy of an angle using only a compass and a straightedge?

Answer 1

step 1: draw a circle center at the vertex of the angle.

Answer 2

step2: keep the width of the compass same as step 1, draw a circle with the same radius, the new center is at one point of the line where we want to copy the angle.

Answer 3

measure the width of the arc from the old one by compass.

Answer 4

from the intersection point of the new line with the new circle, draw an arc with the same measure of the arc from the old one.