Descriptive Geometry/Mathematical Constructions


 * 1) /Addition/Subtraction/
 * 2) /Multiplication/Division/
 * 3) /Golden Ratio/
 * 4) /Ellipse/Parabola/Hyperbola/
 * 5) /Triangle to Right Triangle/
 * 6) /Right Triangle with a Specified Leg Length/
 * 7) /Area of a Triangle/
 * 8) /Polygon Reduction to Triangle/