TIME REMAINING 26:27
Given: m EDF = 120°; m ZADB = (3x)"; m2BDC =
(26)
Prove: x = 24
What is the missing reason in step 3?
Reasons
1. given
Statements
1mZEDF=120
mZADB - (3x)
m BDC (2x)
2 _EDF and ADC are verts
3 EDF a LADC
4 mZADC - MZADB M2BDC
5 m_EDF-M ADC
6 mZEDF - m_ADB-m_BDC
7 120 - 3x-2x
8
120 - 5x
9X - 24
E
1200
D
(3x)
c
2 del of vert 25
3 ?
4
Zadd post
5 def of
6 substitution
7 7 substitution
8 addition
9. div. prop of eq
(2x)
B
КА
vertical angles are congruent
O substitution
definition of congruency
definition of equality
Next
Submit
Martisans
11