i. If R, S and T were the vertices of a 30, 60, 90 triangle with properOriginally Posted byJudi

arrangement of the labels RT=2RS would be true.

ii. If this were the case RS would have to be a side of the square, and

RT the diagonal, but then 2RS^2 != RT^2, a contradiction

iii. A circle can be drawn through any three points in the plane.

RonL