IM Geometry Unit 2 Lesson 10
Figure 1

Is this shape rigid or flexible?
Which triangle congruence shortcut can you use to prove triangle QSO is congruent to triangle PSO?
- A
- B
- C
Figure 2

Is this shape rigid or flexible?
Which triangle congruence shortcut can you use to prove triangle JYH is congruent to triangle JYF?
- A
- B
- C
Figure 3

Is this shape rigid or flexible?
Which triangle congruence shortcut can you use to prove triangle KNL is congruent to triangle MNL?
- A
- B
- C
Figure 4

Is this shape rigid or flexible?
Which triangle congruence shortcut can you use to prove triangle STV is congruent to triangle UVT?
- A
- B
- C
Figure 5

Is this shape rigid or flexible?
Which triangle congruence shortcut can you use to prove triangle ABC is congruent to triangle CDA?
- A
- B
- C
Figure 6

Is this shape rigid or flexible?
Which triangle congruence shortcut can you use to prove triangle ZIB is congruent to triangle ABI? (You will need to imagine the auxiliary line needed.)
- A
- B
- C