Question

The diagonals of the rectangle ABCD intersect at' O' If ∠ COD = 72° , then measure of ∠OAB is :​

Answer 1

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Answer: 51°

Step-by-step explanation:

angle AOB = angle DOC

In A OAB

angleO + angleA + angleB = 180

78 + x + x = 180

78 + 2x = 180

2x = 180-78

2x = 102

x = 102/2

x=51

angle OAB = 51