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Byju's Answer
Standard VII
Mathematics
Linear Pair
From the foll...
Question
From the following figure, find the value of
∠
AOD and
∠
BOD.
A
∠
AOD = 138° and
∠
BOD = 42°
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B
∠
AOD = 42° and
∠
BOD = 138°
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C
∠
AOD = 120° and
∠
BOD = 60°
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D
∠
AOD = 130° and
∠
BOD = 50°
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Solution
The correct option is
A
∠
AOD = 138° and
∠
BOD = 42°
Given,
∠
COA = 42°.
∠
AOD +
∠
COA = 180° (Linear Pair)
∠
AOD + 42° = 180°
∠
AOD = 180° - 42° = 138°
Hence,
∠
AOD = 138°.
∠
COA =
∠
BOD = 42° (Vertically Opposite angles)
Thus,
∠
AOD = 138° and
∠
BOD = 42°.
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Q.
Two lines AB and CD intersect at O. If ∠AOC = 50°, find ∠AOD, ∠BOD and ∠BOC.