What is the sum of the interior angles of a triangle?

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What is the sum of the interior angles of a triangle?

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Answer 1 · 2016-07-02T14:11:14

Sum of angles in any triangle is $180^{o}$ $180^o$

Explanation:

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Both angles $α$ $alpha$ are Alternate Interior Angles and, therefore, are congruent (equal in value).
Both angles $γ$ $gamma$ are Alternate Interior Angles and, therefore, are congruent (equal in value).

The sum of all three angles $α$ $alpha$ , $β$ $beta$ and $γ$ $gamma$ inside a triangle equals to sum of angles $α$ $alpha$ , $β$ $beta$ and $γ$ $gamma$ at the top of a picture that together form straight angle of $180^{o}$ $180^o$ .

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What is the sum of the interior angles of a triangle?

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