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OpenStudy (anonymous):
If polygon ABCD rotates 70° counterclockwise about point E to give polygon A'B'C'D', which relationship must be true?
A′E = AE
BB′ = DD′
m∠ABC
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OpenStudy (kc_kennylau):
Because it is rotation, all points on the quadrilateral remain the same distance with the center of rotation
OpenStudy (kc_kennylau):
Therefore the first relationship is true
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