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Solve sides on an isosceles triangle

This math skill involves solving for the sides of an isosceles triangle. It focuses on recognizing that in such triangles, the two sides adjacent to the equal angles are of the same length, while noting the limitation in determining the third side without an angle measurement.

Learn solve sides on an isosceles triangle

Teaching Transcript

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What do we know about the sides on this triangle

First let's identify the type of triangle. It has two identical angles, so it's isosceles

That means that the two sides touching the unique angle are identical, so 'X' = 15

However, without an angle measurement, we don't know anything about 'Y'

Skill Practice

Solve sides on an isosceles triangle

Test your understanding of solve sides on an isosceles triangle by practicing it! Work through the below exercises to use it in practice.