Geometry and TrigonometryEasy–MediumMissing angle of a quadrilateral
Geometry and Trigonometry practice question
The angles of a quadrilateral measure 80°, 95°, 110°, and x°. What is the value of x?
Answer: 75
The angles of a quadrilateral sum to 360°, so x = 360 − 285 = 75.
Common wrong answers
- If you answered 95
- 95 repeats a given angle.
- If you answered 285
- 285 is the sum of the three given angles.
- If you answered -105
- −105 uses 180 as the total.
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- Easy–Medium
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What is the midpoint of the segment joining the points (2, 3) and (8, 11)? - Easy–Medium
What is the measure, in degrees, of angle B? - Easy–Medium
What is the area, in square centimeters, of the trapezoid?
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