Find ∠OSN
Attached Figure / Diagram
A
36º
B
42º
C
54º
D
72º
Verified Correct Answer: A.
Step-by-Step Mathematical Solution
The sum of angles in a triangle = 180º
(180 - 108)º = 72º
Isosceles triangle has both two equal sides and two equal angles.
∠OSN = \(\frac{72}{2}\)
= 36º
Source: WAEC / JAMB / NECO Classroom Archive (Record #64841)