Question

the sum of the interior angles of a triangle is​

Answer 1

Answer:

The sum of the interior angles of a triangle is 180°.

This is called the angle sum property of a triangle.

Answer 2

Answer:

180

Step-by-step explanation:

A triangle's angles add up to 180 degrees because one exterior angle is equal to the sum of the other two angles in the triangle. In other words, the other two angles in the triangle (the ones that add up to form the exterior angle) must combine with the third angle to make a 180 angle.