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+#ifndef TRIANGLE_H_696E06A8
+#define TRIANGLE_H_696E06A8
+
+#include "matrix3x3.h"
+
+class Triangle {
+  public:
+    Triangle(double x0, double y0, double x1, double y1, double x2, double y2);
+    
+    bool in_bounds(double x, double y) const;
+    void random_point(double& x, double& y) const;
+    void random_vertex(double& x, double& y) const;
+    
+    double getX0() const;
+    double getX1() const;
+    double getX2() const;
+    double getY0() const;
+    double getY1() const;
+    double getY2() const;
+    
+  private:
+    double x0, x1, x2;
+    double y0, y1, y2;
+    double minx, miny, maxx, maxy;
+    double a1, a2, a3;
+    double b1, b2, b3;
+    double c1, c2, c3;
+};
+
+Matrix3x3 affineTransform(Triangle from, Triangle to);
+
+#endif /* end of include guard: TRIANGLE_H_696E06A8 */