


Challenge 


AngleAngle (AA Similarity):
If two angles of one triangle are congruent to two corresponding angles in another triangle, then the triangles are similar. 
Similar Triangles: Determine proportions comparing the side lengths of similar triangles.
Side Splitter: Find a relationship between sides in two triangles.
Altitude to the Hypotenuse: Investigate the relationship between sides of right triangles when an altitude is drawn to the hypotenuse of a right triangle.
Casting Shadows: Use a man's shadow to determine his distance from a tree.


