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Question

One angle of a quadrilateral is of 108 and the remaining three angles are equal. Find each of the three equal angles. Thinking Process:
The sum of all the angles in a quadrilateral is 360, use this result and simplify it.



A

78

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B

104

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C

72

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D

84

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Solution

The correct option is D

84


Let each of three equal angles be x.

Now, sum of angles of a quadrilateral = 360

108+x+x+x=3603x=360108

x=2523

x=84

Hence, each of the three equal angles is 84.


Mathematics

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