CPM Homework Help : CCG Problem 8-59

Multiple Choice: The triangles below are congruent because of:

SSA $\cong$

HL $\cong$

SAS $\cong$

SSS $\cong$

none of these

Hint:

What special types of angles are present in this triangle? Think about parallel lines.
Are there any sides that are congruent?
Do you have enough information to say the triangles are congruent?
Which conjecture matches the information you determined?

2 triangles share a horizontal side, the angles opposite the horizontal side, each have 1 tick mark, the left side of the top triangle, & right side of bottom triangle, each have 2 arrows.