Geometry and TrigonometryMediumConsecutive angles of a parallelogram
Geometry and Trigonometry practice question
In parallelogram ABCD, angle A measures 70°. What is the measure, in degrees, of angle B?
Answer: 110
Consecutive angles of a parallelogram are supplementary: 180 − 70 = 110.
Common wrong answers
- If you answered 20
- 20 treats the angles as complementary.
- If you answered 70
- 70 is the opposite angle C, not B.
- If you answered 290
- 290 uses 360.
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