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5 votes
15 points!!
What do you think? And why?

15 points!! What do you think? And why?-example-1
User Okyam
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6.7k points

1 Answer

2 votes
Angle ECF is facing outward and is not locked into the polygon ABCD being formed on the plane. Because of this, it would be an exterior angle.
User Movila
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