Transformations: Possible PreImages?
This problem is a digital analogue of this Open Middle problem submitted by Jon Henderson.
Given triangle ABC with vertices A = (-8,2), B = (-2,2), and C = (-2,8), create a triangle (shown on right) whose vertices lie in quadrant 1 so that you use a
translation by vector,
rotation about point, and
reflection about line
in any order, to map that triangle onto triangle ABC, thus showing congruence.