मराठी

If two supplementary angles are in the ratio 1:2, then the bigger angle is ______. - Mathematics

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प्रश्न

If two supplementary angles are in the ratio 1:2, then the bigger angle is ______.

पर्याय

  • 120°

  • 125°

  • 110°

  • 90°

MCQ
रिकाम्या जागा भरा

उत्तर

If two supplementary angles are in the ratio 1:2, then the bigger angle is 120°.

Explanation:

We know that, when the sum of the measures of two angles is 180°, then the angles are called supplementary angles.

Let us assume two angles be 1x and 2x.

∴ 1x + 2x = 180°

⇒ 3x = 180°

⇒ x = `180^circ/3`

⇒ x = 60°

∴ The bigger angle is 2x = 2 × 60° = 120°.

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पाठ 5: Lines and Angles - Exercise [पृष्ठ १३१]

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एनसीईआरटी एक्झांप्लर Mathematics [English] Class 7
पाठ 5 Lines and Angles
Exercise | Q 21. | पृष्ठ १३१

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