Question

Draw any triangle with one exterior angle and prove that measure of the exterior angle is equal to sum of the opposite interior angles by measuring each angles​

Answer 1

Step-by-step explanation:

Theorem: An exterior angle of a triangle is equal to the sum of the opposite interior angles. In the figure above, drag the orange dots on any vertex to reshape the triangle. The exterior angle at B is always equal to the opposite interior angles at A and C.

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Answer 2

Answer:

Theorem : an exterior angle of a triangle is equal to the sum of the opposite interior angle