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Question

The angles of a quadrilateral are in the ratio 1:2:3:4. If the sum of the angles of a quadrilateral is 360o , find the measure of the each angle.

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Solution

Let the angles be a,b,c,d
a:b:c:d=1:2:3:4
Given a+b+c+d=360
a1=b2=c3=d4=k
a=k,b=2k,c=3k,d=4k
a+b+c+d=10k=360
k=36
a=36;b=72;c=108;d=144
If ab=571
bc=14152
1×2
ab×bc=57×1415
ac=23

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