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Quadrilateral A'B'C'D' is the image of quadrilateral ABCD under a rotation aboucD'DВ!АDetermine the angle of rotation.

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From the figure, it can be observed that vertex A lie horizontally in staright line at certain distance from point Q.

After rotation vertex A' lie vertically above the point Q (In staright line). So line from A to Q changes horizontally to vertically after rotation.

Thus quadilateral ABCD is rotated by angle of 90 degree (Clock wise direction) to obtain quadilateral A'B'C'D'.

User Ahmed Moheb
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