Josie says that (-15) X *** (-15) = -15°. Is she correct? How do you know?
6 times

What is the measure of x, in degrees

What is the next step in the given proof? choose the most logical approach. a. statement: m 1 + m 2 + 2(m 3) = 180° reason: angle addition b. statement: m 1 + m 3 = m 2 + m 3 reason: transitive property of equality c. statement: m 1 = m 2 reason: subtraction property of equality d. statement: m 1 + m 2 = m 2 + m 3 reason: substitution property of equality e. statement: 2(m 1) = m 2 + m 3 reason: substitution property of equality

Type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar.