#include "EquilateralTriangle.h" #include "GeometryUtils.h" bool EquilateralTriangle::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]); // Equilateral triangles must (a) Be a triangle and (b) Have three equal // sides return lengths_make_triangle(sideOne, sideTwo, sideThree) && (double_eq(sideOne, sideTwo) && double_eq(sideTwo, sideThree)); }