- ASAS
- BAAA
- CRHS only
- DSSA
Step-by-Step Solution
With AB = AC, angle BAD = angle CAD, and AD common, triangles ABD and ACD are congruent by SAS.
Answer: A) SAS
Which congruence rule is used to prove that base angles of an isosceles triangle are equal (AB = AC, with AD bisecting angle A)?
Class 9Properties of Isosceles TrianglesGeometry — Triangles
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