Question

Given: mAngleEDF = 120°; mAngleADB = (3x)°; mAngleBDC = (2x)° Prove: x = 24

what is the missing reason in step 3?

a. vertical angles are congruent
b. substitution
c. definition of congruency
d. definition of equality

Answer 1

a

Explanation:

step 3 is a. because vertical angles are congruent

when you intersect 2 lines they form 2 pairs of vertical angles that are congruent.

Answer 2

Vertical angles are congruent

Explanation: