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Question

The angles of a quadrilateral are 2a, 4a, 7a and 5a. The measure of angles of quadrilateral are:


A

85o, 50o, 200o and 40o

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B

36o, 54o, 140o and 250o

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C

40o, 80o, 150o and 120o

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D

40o, 80o, 140o and 100o

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Solution

The correct option is D

40o, 80o, 140o and 100o


The sum of angles of a quadrilateral is 360o.

2a + 4a + 7a + 5a = 360o

18a=360o

a = 20o

So, the angles of a triangle are 40o, 80o, 140o and 100o.


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