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Question
In the given figure. p° = q° = r°, find each.
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Solution
p° + q° = r° = 180° ..........(straight angle)
But p° = q° = r° .........(given)
∴ p° + p° + p° = 180°
⇒ 3p° = 180°
⇒ p° =`(180°)/3` = 60°
Hence p° = q° = r° = 60°
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