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प्रश्न
Angles which are both supplementary and vertically opposite are ______.
विकल्प
95°, 85°
90°, 90°
100°, 80°
45°, 45°
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उत्तर
Angles which are both supplementary and vertically opposite are 90°, 90°.
Explanation:
Since, vertically opposite angles are equal.
∴ Let each angle be x.
⇒ x + x = 180° ...[∵ Angles are supplementary]
⇒ 2x = 180°
⇒ x = 90°
Thus, the required angles be 90° each.
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