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Why is it impossible for a triangle to contain a 180° angle

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Answer:

The sum of the angles within a triangle is 180 degree.

Explanation:

We are asked to determine why is it impossible for a triangle to contain a 180° angle.

We know that angle sum property of triangle states that sum of all three angles of triangle must be equal to 180°.

We also know that measure of angle on a straight line is 180 degrees. So, if an angle measure to 180 degrees, then it will be a line not a triangle.

Therefore, it is impossible for a triangle to contain a 180° angle.

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