A5/EquilateralTriangle.cpp

#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));
}