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प्रश्न
Find the value of the angle in the given figure:
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उत्तर
In the figure,
∠A + ∠B + ∠C = 180° .....(Sum of angles of a triangle)
⇒ x° + 2x° + 2x° = 180°
⇒ 5x° = 180°
⇒ x° = `(180°)/5=36°`
∴ ∠A = x° = 36°
∠B = 2x° = 2 × 36° = 72°
and ∠C = 2x° = 2 × 36° = 72°
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