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Mathematics
Mathematics
Problem
In a circle, chords
A
B
AB
A
B
and
C
D
CD
C
D
are equal. What relation exists between
∠
A
O
B
\angle AOB
∠
A
O
B
and
∠
C
O
D
\angle COD
∠
C
O
D
? Give a brief reason for your answer.
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