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In a quadrilateral ABCD, if angle A = 70°, angle B = 110°, and angle C = 90°, wh

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Question: In a quadrilateral ABCD, if angle A = 70°, angle B = 110°, and angle C = 90°, what is the measure of angle D?

Options:

  1. 80°
  2. 90°
  3. 100°
  4. 110°

Correct Answer: 80°

Solution: 

The sum of the angles in a quadrilateral is 360°. Therefore, angle D = 360° - (70° + 110° + 90°) = 360° - 270° = 90°.

In a quadrilateral ABCD, if angle A = 70°, angle B = 110°, and angle C = 90°, wh

Practice Questions

Q1
In a quadrilateral ABCD, if angle A = 70°, angle B = 110°, and angle C = 90°, what is the measure of angle D?
  1. 80°
  2. 90°
  3. 100°
  4. 110°

Questions & Step-by-Step Solutions

In a quadrilateral ABCD, if angle A = 70°, angle B = 110°, and angle C = 90°, what is the measure of angle D?
  • Sum of Angles in a Quadrilateral – The total measure of the interior angles in any quadrilateral is always 360°.
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