Prove Triangle Is Isosceles using Coordinate Geometry
An isosceles triangle
has 2 congruent sides and two congruent angles. The easiest way to prove that a triangle is isosceles
using coordinate geometry is to use the sides.
Steps to Coordinate Proof
Given the coordinates of the triangle's vertices, to prove that a triangle
Practice Problem 2)
Triangle ABC has coordinate A(-2,3) , B (-5,-4) and C (2,-1) Using coordinate geometry
, prove that triangle
BCD is an isosceles triangle.
Calculate all 3 distances