The angles of a quadrilateral are x 10 o 2yo 90... - WAEC Mathematics 2008 Question
The angles of a quadrilateral are (x + 10)o, 2yo, 90o and (100 - y)o, Find y in terms of x
A
y = 160 + x
B
y = 100 + x
C
y = 160 - x
D
y = x - 100
correct option: c
Sum of the angles in a quadrilateral = 360o
(x + 10o) + 2y + 90o + 100 - y = 360o
x + y + 200 = 360o
y = 360 - 200 - x
y = 160 - x
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