Find the distance between the points B and B′′ if ΔABC is reflected across the line l to form ΔA′B′C′, followed by a reflection across line m to form ΔA′′B′′C′′ Question 20 options:

A)

20

B)

2.5

C)

5

D)

10

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