Being • Changes • Circle • Circular • Considered • Continuity • Cross • Curvature • Curve • Curves • Direction • Does • Each • Enclosed • Have • Infinite • Inside • Intersect • Intersections • Intersects • Itself • Line • Long • Loops • Maintain • Meets • Must • Once • One • Outside • Parabolas • Part • Parts • Parts. • Quadratic • Right • Segment • Segments • Self • Should • Sides • Simple • Single • Smooth • Spiral • Themselves • They • Three • Unbroken • Vertex