Using ruler and compass only, draw a right angle.
Answer:
Draw a ray . With as the center and any convenient radius, draw an arc, cutting at . With as the center and the same radius, draw an arc, cutting the arc drawn in step 2 at . With as the center and the same radius, draw an arc, cutting the arc drawn in step 2 at . With as the center and the same radius, draw an arc. With as the center and the same radius, draw an arc, cutting the arc drawn in the previous step at . Draw and produce it to . is the angle of measure .