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Mathematics
Mathematics
Problem
In parallelogram
A
B
C
D
ABCD
A
B
C
D
, the diagonals intersect at
O
O
O
. If
∠
A
O
B
=
52
∘
\angle AOB = 52^\circ
∠
A
O
B
=
5
2
∘
, what is the measure of
∠
C
O
D
\angle COD
∠
C
O
D
? a)
128
∘
128^{\circ}
12
8
∘
b)
52
∘
52^{\circ}
5
2
∘
c)
38
∘
38^{\circ}
3
8
∘
d)
104
∘
104^{\circ}
10
4
∘
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