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Question Stats:
64% (02:13) correct 36% (02:04) wrong based on 5593 sessions
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File comment: y+A+B+C = 360 (sum of all the angles in quadrilateral-YABC )
A= 180-(y+v) (sum of all angles in a triangle is 180,Triangle YAV)
B= 180-(x+z) (Triangle XBZ)
C= 180-(y+w) (Triangle YCW)
Now, Substitute the values of A, B and C in the equation : A+B+C+y=360
(180-y-v) + (180-x-z) + (180-y-w) + y =360
By solving the above, we get:
540 - w - v - z - x - 2y + y=360
x+y+v+z+w=180
ANSWER - C
Govind Kohli
Kudos if this helps
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