- locus
- conchoid of a circle
- angle bisector as locus
- the locus of the intersection of two lines
- geometric constructions - 11
- constructing a hyperbola...
- constructing a parabola
- constructing an ellipse...
- ranunculoid
- conchoid of nicomedes
- limacon of pascal
- cycloids
- trammel of archimedes
- piriform
- an apollonian circle
- a definition of conics (directrix)
- ellipse as a hypotrochoid
- ellipses and hyperbolas
- eight curve (construction)
- radical axis-1
- radical axis-2
- hippias' quadratrix
- geometric constructions - 1
- circle and ellipse
- bifolium
- kappacurve
- right strophoid
- folium
- torpedo curve
- constructing a trifolium
- bicorn
- trisectrix of maclaurin
- deltoid
- astroid
- versoria
- limacon of pascal-1
- cardioid-1
- cissoid of diokles
- lemniscate of bernoulli
- eightcurve
- conchoid of nicomedes-1
- ellipse-1
- hyperbola-1
- parabola-1
- Rolling Coin 滾動的硬幣 (1)
- the reuleaux triangle-1
