What type of angles are used to help prove that the sum of the measures of the interior angles of a triangle is always 180° ? (1 point)Responsesright anglesright anglesvertical anglesvertical anglesalternate interior angles alternate interior angles obtuse angles

Answer 1

To help prove that the sum of the measures of the interior angles of a triangle is always 180°, you typically use alternate interior angles.

Here’s a brief explanation: When you draw a line parallel to one side of the triangle and extend the other two sides, the angles formed by the parallel line and the triangle's sides can be shown to be equal to the triangle's interior angles. The alternate interior angles formed in this way are equal, helping establish that the sum of the interior angles is 180°.

So the correct response is: alternate interior angles.