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

Given mAngleEDF 120 mAngleADB 3x mAngleBDC 2x Prove x 24 what is the missing reason in step 3a vertical angles are congruentb substitutionc definition of congru class=
Given mAngleEDF 120 mAngleADB 3x mAngleBDC 2x Prove x 24 what is the missing reason in step 3a vertical angles are congruentb substitutionc definition of congru class=