Geometry and TrigonometryHardRemote interior angle from an exterior angle
Geometry and Trigonometry practice question
The exterior angle at one vertex of a triangle measures 110°, and one of the two remote interior angles measures 45°. What is the measure, in degrees, of the other remote interior angle?
Answer: 65
An exterior angle equals the sum of the two remote interior angles: 110 − 45 = 65.
Common wrong answers
- If you answered 25
- 25 subtracts 45 from 70.
- If you answered 70
- 70 is the interior angle at the vertex with the exterior angle.
- If you answered 155
- 155 adds instead of subtracting.
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