Step 1

Draw a ray on your paper using a straightedge, and place a point (in addition tothe initial point) on the ray. Label the initial pointR,and label the second pointP.Now you have a ray,RP.

Step 2

Use a straightedge to draw another ray with the same initial point. Place another point on that ray, and label the pointS.Now you have a ray,RS,and an angle,SRP.

Step 3

Place the point of a compass at the vertex of the angle, pointR,and draw an arc, with a radius of any length, that intersects both legs ofSRP.Label the intersection points asAandB.Be careful to not change the compass setting.

Step 4

Without changing the compass setting, place the point of the compass at pointAand draw an arc through the interior ofSRP.

Step 5

Without changing the compass setting, place the point of the compass at pointBand draw an arc through the interior ofSRP.Mark the intersection of the arcs with a point and label itT.

Step 6

Using a straightedge, draw a ray from the initial point,R,through pointT.This ray,RT,is the angle bisector ofSRP.

Step 7

Check your work by using a protractor to findmSRTandmTRPto verify they are the same measure.