EMAT 6690
I. Tell why the tests for congruency of right triangles have only two requirements while the tests for other triangles have three.
II. Which of the tests for congruent triangles would you use to justify the LL test for congruent right triangles?
III. In the figures below, name the theorem or postulate used to determine whether each pair of triangles is congruent. If there is not enough information state none.
A) 
B) 
C) 
D) 
IV. For each figure below, find the value of x and y so that triangle ABC will be congruent to triangle DEF by the indicated theorem or postulate.
A)
B)
C) 