Activity #20__the Semicircle tool
DIRECTIONS
1.   Use the Semicircle tool to create a semicircle with points A and B.
2.   Connect points A and B with a line segment.
3.   Create a point C anywhere on the semicircle.
4.   Create the triangle ABC.
5.    Use the Move tool to change the size of the semicircle.
6.   Use the Move tool to move point C to another location on the semicircle.