Question

help please!.....
You are given the coordinates of three points that are the vertices of a triangle. You need to determine if the triangle is a right triangle. Explain how you could determine this.

Answer 1

1. either find the lengths of three sides by the formula
d=sqrt[(x2-x1)^2+(y2-y1)^2]
If the sum of squares of any two sides =square of the third side,then it is a right angled triangle.
2. If the product of slopes of any two sides=-1,then it is a right angled triangle.
slope of any line=(y2-y1)/(x2-x1)

Answer 2

thanx