Question

which of the following is not a congruence theorem or postulate?
a. sas
b. aa
c. aas
d. sss

Explanation:

• SAS (Side - Angle - Side): If two sides and the included angle of one triangle are equal to two sides and the included angle of another triangle, the triangles are congruent.
• AA (Angle - Angle): This is a similarity criterion (if two angles of one triangle are equal to two angles of another triangle, the triangles are similar), not a congruence criterion.
• AAS (Angle - Angle - Side): If two angles and a non - included side of one triangle are equal to two angles and the corresponding non - included side of another triangle, the triangles are congruent.
• SSS (Side - Side - Side): If three sides of one triangle are equal to three sides of another triangle, the triangles are congruent.

Answer:

B. AA