# G.GCO.7 Is "SSA" Legit? What Do You Think?

- Author:
- Dan Dale, Tim Brzezinski

- Topic:
- Congruence, Triangles

*So far, we've learned a few theorems that help us prove two triangles congruent. Recall these theorems are:*

**The SSS Theorem The SAS Theorem The ASA Theorem**Yet, what about

**"SSA"**? That is,

**if we have 2 sides and a "non-included" angle of one triangle congruent to 2 sides and a "non-included" angle of another triangle, can we conclude that the two triangles are congruent**? Interact with the applet below for a minute or two. (Feel free to move any of the big black points around.) Then answer the

**question**above (in detail.)