- AVertex angle
- BBase angle
- CExterior angle
- DRight angle
Step-by-Step Solution
The angle included between the two equal (lateral) sides is the vertex angle; the other two are base angles.
Answer: A) Vertex angle
What is the angle between the two equal sides of an isosceles triangle called?
Class 9Properties of Isosceles TrianglesGeometry — Triangles
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