IM2.7 T3 Centers of Rotation 2

Lind, Jon

Multiple points

Triangle A'B'C' below is a rotation of triangle ABC. Use what you learned in the last task to find the center of rotation. Leave any constructions visible to illustrate your method. Hint: Try to use circles in your constructions.

Describe how to find the center of rotation for figures made up of multiple points. Try to use the words perpendicular bisectors, intersection, concentric circles, corresponding, image, pre-image, equidistant in your description.