Congruence and Right Triangles

• A
• B
• C
• D

• A
• B
• C
• D

• A
• B
• C
• D

• A
• B
• C
• D

• A
• B
• C
• D

If DA is perpendicular to IE, then we can immediately conclude that

• IA=AE

• ∠IAD = ∠DAE

• ∠IDA=∠EDA

• ∠IAD and ∠DAE are right angles

Identify the triangle congruence

• SSS

• ASA

• SAS

• AAS

• NEI

5 - Identify the triangle congruence

• SSS

• ASA

• SAS

• AAS

• NEI

Are these triangles congruent?

• Yes, by ASA

• Yes, by SAS

• Yes, by AAS

• No, this is the SSA one!!

Are these triangles congruent?

• Yes, by AAS

• Yes, by SAS

• Yes, by ASA

• No, this is the SSA one!!