SOLUTION: show that the given points are vertices of a right triangle, find its area and prove whether it is a right triangle. (2,45°),(√2,90°),(-2,135°)

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Question 1048024: show that the given points are vertices of a right triangle, find its area and prove whether it is a right triangle.
(2,45°),(√2,90°),(-2,135°)

Answer by ikleyn(52903) About Me  (Show Source):
You can put this solution on YOUR website!
.
Your writing (-2, 135°) is a mistake.

A modulus of the point in a coordinate plane (in trigonometric, or angular form) is always positive and never can be negative.