Mathematics, 15.10.2020 19:01 vgh641

Triangle CDA is the image of triangle ABC after a 180º rotation around the midpoint of segment AC. Triangle ECB is the image of triangle ABC after a 180º rotation around the midpoint of segment BC. Explain how to use what you know about the sum of the angles in a triangle to figure out the sum of the angles of quadrilateral ABEC .

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Triangle CDA is the image of triangle ABC after a 180º rotation around the midpoint of segment AC. T...

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