English

In the given figure, if AB || CD, ∠APQ = 50° and ∠PRD = 130°, then ∠QPR is ______. - Mathematics

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Question

In the given figure, if AB || CD, ∠APQ = 50° and ∠PRD = 130°, then ∠QPR is ______.

Options

  • 130°

  • 50°

  • 80°

  • 30°

MCQ
Fill in the Blanks

Solution

In the given figure, if AB || CD, ∠APQ = 50° and ∠PRD = 130°, then ∠QPR is 80°.

Explanation:


Since, AB || CD and PR is a transversal

∴ ∠APR = ∠PRD  ......[Alternate interior angles]

⇒ ∠APR = 130°

⇒ ∠APQ + ∠QPR = 130°

⇒ 50° + ∠QPR – 130°

⇒ ∠QPR = 130° – 50° = 80°

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Chapter 5: Lines and Angles - Exercise [Page 129]

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NCERT Exemplar Mathematics [English] Class 7
Chapter 5 Lines and Angles
Exercise | Q 10. | Page 129
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