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Mathematics
Mathematics
Problem
Lines
A
B
AB
A
B
and
C
D
CD
C
D
intersect at point
O
O
O
. Write a paragraph proof to show that
∠
A
O
C
=
∠
D
O
B
\angle AOC = \angle DOB
∠
A
O
C
=
∠
D
O
B
.
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