Question

Classify the triangle based on angle measures.

Answer 1

Let's name these angles.

∠ A = 72°

∠ B = 54°

∠ C = 54°

Now, in this triangle, two angles, i.e., ∠ B and ∠ C are same.

According to the properties of triangle, sides opposite to two equal angles in a triangle are also equal, which means the two sides opposite to 54° in the figure will be equal.

=> AB = AC

Now, if there are two equal sides in a triangle then the triangle is called Isosceles Triangle.

So, the above triangle is an Isosceles Triangle.