Question

What can you say about the angles of such triangle.​

Answer 1

The three interior angles in a triangle will always add up to 180°. At each corner the exterior and interior angles are on a straight line, so at each corner these two angles add up to 180°. An isosceles triangle has two lengths which are the same as each other, and two angles which are the same as each other.

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Answer 2

Legs, base, vertex angle, and base angles. In an isosceles triangle, the two equal sides are called legs, and the third side is called the base. The angle formed by the two equal sides is called the vertex angle. The other two angles are called base angles.