### Concept (1)

When two triangles are congruent, all three pairs of corresponding sides are congruent and all three pairs of corresponding angles are congruent. If all three pairs of corresponding sides are congruent, the triangles are congruent. This congruence shortcut is known as side-side-side (SSS). Another shortcut is side-angle-side (SAS), where two pairs of sides and the angle between them are known to be congruent. SSS and SAS are important shortcuts to know when solving proofs.

### Sample Problems (4)

Need help with "SSS and SAS" problems? Watch expert teachers solve similar problems to develop your skills. ###### Problem 1
How to use SSS to determine congruence of triangles and denote the congruence correctly. ###### Problem 2
How to use SAS or SSS to determine congruence of triangles and denote the congruence correctly. ###### Problem 3
How to determine if two triangles are congruent by either SSS or SAS. ###### Problem 4
How to use SAS and SSS to determine which triangles within a larger polygon are congruent.