Question

5.The diagonals of the rectangle ABCD intersect at O. If ∠COD = 78°, then ∠OAB

Answer 1

Answer:

51 degree

Step-by-step explanation:

Angle AOB = angle DOC

In ∆ OAB  , angle O + angle A + angle B = 180

78 + x + x = 180

78 + 2x = 180

2x = 180 - 78

     = 102

x = 102/2

 = 51 degree

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