Construct a segment whose measure is the length of .
Note: Drag points P and Q to try different line segments.

Copy the segment and label it .

Make a large arc intersecting .

Make a second large arc.

Connect the points of intersection of the arcs.
is congruent to .
and are both the length of .

Find the midpoint of .

Make a second large arc.

Connect the points of intersection of the arcs.
Do not erase any of your markings.
is congruent to .
is the length of .

This applet is provided by Walch Education as supplemental material for their mathematics programs. Visit www.walch.com for more information on their resources.