Question

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

Answer 1

the diagonals of a rectangle ABCD intersect at point O. If angle COD = 78°, then find the value of angle OAB

2

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Answer

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soulgaming350

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Answer: 51°

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

2x = 102

x = 102/2

x = 51

angle OAB = 51

Answer 2

Answer:

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Answer: 51°

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

2x = 102

x = 102/2

x = 51

angle OAB = 51