Exterior Angles Of A Triangle Add Up To at Exterior

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Exterior Angles Of A Triangle Add Up To. An exterior angle of a triangle is equal to the sum of the two opposite interior angles. The angles add up to 180°, so each angle is 60°.

Exterior Angle Theorem and Triangle Angle Sum Theorem
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In the figure above, drag the triangle's vertices and see that this is so. An exterior angle of a triangle is equal to the sum of the opposite interior angles. Did i do that right?

Exterior Angle Theorem and Triangle Angle Sum Theorem

You don't need to be told any angles in an equilateral to find a missing angle. A triangle has six exterior angles and three interior angles. Triangles are one of the most fundamental geometric shapes and have a variety of often studied properties including: Below are the properties of an exterior angle of a triangle.