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Which is the best definition of an exterior angle of a triangle

Which is the best definition of an exterior angle of a triangle-example-1

1 Answer

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Answer:

exterior of an angle should add up to 180 with the other angle. so the angle next to the exterior angle should add up to 180. the exterior angle should be the one outside or facing the or opening up to the outside.

Explanation:

User Steven Eckhoff
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