Question

Each answer choice shows the measures of the three sides of a triangle.
Which triangle is an isosceles triangle?

34 m, 44 m, 43 m

21 m, 12 m, 21 m

56 m, 56 m, 56 m

99 m, 79 m, 97 m

Answer 1

An isosceles triangle has 2 equal sides. So the answer is choice B

Answer 2

a triangle is isosceles if two sides are equal