In the figure, find the value of x
Attached Figure / Diagram
A
110o
B
100o
C
90o
D
80o
Verified Correct Answer: C.
Step-by-Step Mathematical Solution
Z = X = Y = 180o .........(i)
2Z + Y + Y = 190 = 2Z + 2Y = 180
Z + Y = 90o........(ii)
hence x + (z + y) = 180
x + 90o = 180o
x = 180o - 90o
= 90o
Source: Myschool Past Questions Archive (Record #32828)