# G.2.2.2 Which Triangles Are Congruent?

- Author:
- Katie Akesson

- Topic:
- Triangles

Here are 3 triangles.
Triangle

*PQR*is congruent to triangle MNL, but not congruent to triangle ACE. Gently trace triangle*PQR*and compare it to triangle*ACE*and*MNL*to see why not.Determine a sequence of rigid motions that takes triangle *PQR* to the triangle it is congruent to.

Explain why there can’t be a rigid motion from triangle *PQR* to the other triangle.