One vertex of a triangle is located at (0, 5) on a coordinate grid. After a transformation, the vertex is located at (5, 0). Which transformations could have taken place? Choose two correct answers.

A rotation of 90° clockwise about the origin maps (x, y) to (y, −x), so (0, 5) becomes (5, 0). That is choice A, a rotation of −90°. The same result comes from rotating 270° counterclockwise, which is choice E.

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