- ASSS
- BAAA
- CASA only
- DThey are not congruent
Step-by-Step Solution
AB = AC, BD = DC (D midpoint), AD common, so triangles ABD and ACD are congruent by SSS.
Answer: A) SSS
In triangle ABC, AB = AC. D is the midpoint of BC. By which rule are triangles ABD and ACD congruent?
Class 9Properties of Isosceles TrianglesGeometry — Triangles
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