Triangle Congruence Warm-Up

Are these triangles adjacent or non-adjacent?

• Adjacent

• Non-adjacent

Are these triangles adjacent or non-adjacent?

• Adjacent

• Non-adjacent

State if the two triangles are congruent. If they are, state how you know

• AAS
• ASA
• Not congruent

How are the triangles congruent?

• SAS
• ASA
• HL
• SSS

How are the triangles congruent?

• AAS
• SAS
• ASA
• SSS

ΔAEB ≅ ΔCED by...

• SAS

• ASA

• AAS

• SSS

Are these triangles congruent?

• Yes, by AAS
• Yes, by SAS
• Yes, by ASA
• No, this is the SSA one!!

State if the two triangles are congruent.  If they are, state how you know.

• A
• B
• C
• D

Which triangle congruence theorem can be used to prove the triangles are congruent?

• SAS
• SSS
• ASA
• HL

Name the corresponding angle or side.

• A
• B
• C
• D