Question

Consider two points, and . We consider the inversion or point reflection, , of point across point to be a rotation of point around . Given sets of points and , find for each pair of points and print two space-separated integers denoting the respective values of and on a new line.

Answer 1

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Answer 2

Answer:

rx=(2*qx)-px;

   ry=(2*qy)-qy;

Explanation:  so basically point p ,q and r are collinear which means they all are lie in the same line so that according to the question point q is the middle point of p and r.

hope this answer will help you!