Geometry and TrigonometryMediumExterior angle of a quadrilateral
Geometry and Trigonometry practice question
In quadrilateral PQRS, angles P, Q, and R measure 70°, 100°, and 110°. What is the measure, in degrees, of the exterior angle at S?
Answer: 100
Angle S is 360 − 280 = 80°, so the exterior angle at S is 180 − 80 = 100.
Common wrong answers
- If you answered 80
- 80 is the interior angle at S.
- If you answered 260
- 260 subtracts 100 from 360.
- If you answered 280
- 280 is the sum of the three given angles.
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