In the figure, find x in terms of a, b and c.
Attached Figure / Diagram
A
a + b + c
B
180o - (a + b + c)
C
a - b - c
D
a + b
E
a + c
Verified Correct Answer: A.
Step-by-Step Mathematical Solution
180 - x + a + b + c
= 180(sum of interior angle in triangle)
a + b + c = x.
Source: Myschool Past Questions Archive (Record #32755)