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SWBAT prove that triangles are congruent using the SSS and SAS congruence postulates

Yesterday we learned that we can prove triangles are congruent by showing corresponding parts are congruent

Today you will learn that we do not need to show all six parts are congruent in order to show triangles are congruent

If three sides of one triangle are congruent to three sides of a second triangle, then the two triangles are congruent

Decide whether there is enough information to prove the triangles are congruent

Decide whether there is enough information to prove the triangles are congruent

If two sides and the included angle of one triangle are congruent to two sides and the included angle of a second triangle, then the two triangles are congruent.

Given the diagram, prove ∆AEB≅∆DEC

A

B

E

D

C

12

Could you use SSS or SAS to prove the triangles are congruent? If there is not enough information to prove the triangles congruent by SSS or SAS, write not enough information.

Could you use SSS or SAS to prove the triangles are congruent? If there is not enough information to prove the triangles congruent by SSS or SAS, write not enough information.

Could you use SSS or SAS to prove the triangles are congruent? If there is not enough information to prove the triangles congruent by SSS or SAS, write not enough information.

Could you use SSS or SAS to prove the triangles are congruent? If there is not enough information to prove the triangles congruent by SSS or SAS, write not enough information.