Question

problem 13: (first taught in lesson 30)
from this given statement, select the definition, property, postulate, or theorem that justifies the prove statement.
given: △jpw
prove: m∠j + m∠w + m∠jpw = 180

Explanation:

In any triangle, the sum of the measures of its interior angles is 180 degrees. Here, $\triangle JPW$ is a triangle and we are proving the sum of its interior angles $\angle J$, $\angle W$, and $\angle JPW$ is 180.

Answer:

The sum - of - angles in a triangle theorem.