Question

question 16 of 22 given the diagram below, gitta writes m∠1 + m∠2 + m∠3 = 180°. which of the following reasons allows her to write this statement? a. exterior angles theorem b. definition of linear pair c. triangle sum theorem d. subtraction property of equality

Explanation:

The triangle sum theorem states that the sum of the interior angles of a triangle is 180°. In the given triangle, ∠1, ∠2, and ∠3 are the interior angles. So, the reason for writing \(m\angle1 + m\angle2 + m\angle3=180^{\circ}\) is the triangle sum theorem.

Answer:

C. Triangle sum theorem