2
Select the correct answer form each drop-down menu.
Given: mZAOB
=
42°
m/EOF =
= 66°
Prove: m/COD = 72°
B
E
subtraction property of equality, ZEOFZB
, mZAOC = 108°, and by the
linear pair theorem
, m/COD
= 72°.
Complete the proof.
=
It is given that m/AOB
m/BOC = 66°. By th✓
m/AOC+m/COD
42° and m/EOF = 66° By the
linear pair theorem
vertical angles theorem
angle addition postulate
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