A5/IsoscelesTriangle.cpp

#include "IsoscelesTriangle.h"

#include "GeometryUtils.h"

bool IsoscelesTriangle::validate() {
	double sideOne = calculate_distance(mVertices[0], mVertices[1]);
	double sideTwo = calculate_distance(mVertices[1], mVertices[2]);
	double sideThree = calculate_distance(mVertices[2], mVertices[0]);

	// Isosceles triangles must (a) Be a triangle and (b) Have two sides that
	// equal each other
	return lengths_make_triangle(sideOne, sideTwo, sideThree) &&
		   (double_eq(sideOne, sideTwo) || double_eq(sideTwo, sideThree) ||
			double_eq(sideThree, sideOne));
}