Geometryeasy · Past Paper
An exterior angle of a triangle is 110 degrees and one of the interior opposite angles is 40. Find the other interior opposite angle.
A70 degrees
B110 degrees
C150 degrees
D40 degrees
✓ Correct Answer: A — 70 degrees
Exterior angle = Sum of interior opposite angles. 110 = 40 + x => x = 70 degrees.
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