Question Video: Identifying Isosceles Triangles Mathematics • 3rd Grade

Which of these is an isosceles triangle? [A] Triangle A [B] Triangle B


Video Transcript

Which of these is an isosceles triangle?

In this question, we’re shown two different triangles, triangle A and triangle B. And we’re asked which of them is an isosceles triangle. Let’s think about what we know about isosceles triangles. This is an isosceles triangle. An isosceles triangle has two equal sides. So, which of our two triangles is an isosceles triangle? Is it triangle A or triangle B? It’s triangle A. These two sides are equal in length. This triangle has two longer sides, which are the same length, and one shorter side. The isosceles triangle is triangle A.

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