Question

In a triangle the sum of any of the two interior angles is equal to any of its exterior angles. Identify the triangle.

Answer 1

Answer:

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.

Although only one exterior angle is illustrated above, this theorem is true for any of the three exterior angles.

Step-by-step explanation:

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Answer 2

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.