Question

The coordinates P(0, 1), Q(3, 2), R(5, -4) form a right triangle.

True or False

Answer 1

find the gradient of the 3 lines that go through each pair of points. If the points make a right-angled triangle then 2 lines will be perpendicular. If 2 lines are perpendicular then their graients will have a product of -1. This would mean that you have a right-angled triangle. 3 points would always make a triangle if they are not all collinear.

Answer 2

false

Answer 3

You are not being very helpful unless you try to explain why it is false...