SAS Postulate Topic Grade 8 First Quarter

SAS Postulate

1. SAS Postulate Learning Target: State and illustrate the postulate.

2. SAS (Side-Angle-Side) Congruence Postulate If the two sides and an included angle of one triangle are congruent to the corresponding two sides and the included angle of another triangle, then the triangles are congruent.

3. ACTIVITY

4. 1. Draw a 7- inch segment. 2. Name it BE. 7 inches B E

5. 3. M ake angle B equal to 70 o degrees . B E 7 inches 70 ˚

6. 4. From the vertex B , draw BL measuring 8 inches long. B E L 7 inches 8 inches 70 ˚

7. 5. Draw ΔBEL. 6. Compare your triangle with the triangles of the other members of the group . 7. Cut the triangle and lay one triangle on top of the others. 8. What can you say about any pair of congruent triangles?