Mathematics, 27.08.2021 06:40, patricklcc07777

In the picture triangle is an image of triangle after a rotation. The center of rotation is . Triangle A prime, B prime, C prime is an image of triangle A, B, C after rotation around another point, D. Side B, C has length 4. Angle B prime has measure 52 degrees. Angle C prime has measure 50 degrees.
What is the length of side ? Explain how you know.
What is the measure of angle ? Explain how you know.
What is the measure of angle ? Explain how you know.
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In the picture triangle is an image of triangle after a rotation. The center of rotation is . Tria...