Interior angles in a triangle add up to 180Ëš. Triangles close triangleA polygon with three straight sides. have three sides, therefore they have three angles. Interior angles in a triangle sum to ...
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Geometry Tutorial: Triangles, Congruency & TypesDiscusses the properties and types of triangles, explaining that a triangle is a closed figure with three sides and angles. It categorizes triangles into equilateral, isosceles, scalene ...
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