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5 votes
Vertical angles must: Check all that apply

A. Be congruent
B. Be adjacent
C. Have the same vertex
D. Be obtuse

2 Answers

3 votes
A. be congruent
cause if you change one line you have to change the other
User Tomohiro
by
7.8k points
1 vote
I would say C. and A. Hope this helps.
User Jyo De Lys
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8.1k points