Fist Lesson
elementary operation
coordinate
saddle plane
special graph
Second Lesson
donut
tow pieces of donut 1
tow pieces of donut 2
tube 1
tube 2
tube 3
tube 4
tube 5
tube 6
triangle torus
Third Lesson
tube 1
saddle
monkey chair
ribbon 1
ribbon 2
ribbon 3
special graph 1
special graph 2
Fourth Lesson
sphere 1
sphere 2
sphere 3
sphere 4
sphere 5
sphere 6
sphere 7
watermelon
erythrocyte
special graph 1
special graph 2
Fifth Lesson
Tube 1
Tube 2
tube 1
tube 2
tube 3
column
plate
plant
special graph 1
special graph 2
special graph 3
special graph 4
special graph 5
sphere
ribbon
Sixth Lesson
circle
circle and ellipse
circle and heart
circle and fan
circle and club
circle and cotton candy
circle and triangle
circle and square
circle and pentagon
circle and polygon
circle and sphere 1
circle and sphere 2
whirlpool
Seventh Lesson
column and sandglass
sandglass
practice 1
morphing 1
morphing 2
tube
morphing 3
saddle
Eighth Lesson
pyramid
cylinder
tube with donut 1
tube with donut 2
tube with donut 3
tube 1
tube 2
Ninth Lesson
four-leaved clover
circle on sphere
chart
tangency of three columns
Tenth Lesson
sphere and cube
sphere and tetrahedron
sphere in cambered surface
Eleventh Lesson
polyhedral
GreatIcosahedron
GreatRhombicuboctahedron
GreatRhombiicosidodecahedron
GreatStellatedDodecahedron
HexakisIcosahedron
HexakisOctahedron
PentagonalHexacontahedron
PentagonalIcositetrahedron
PentakisDodecahedron
RhombicDodecahedron
RhombicTriacontahedron
SmallRhombicuboctahedron
SmallRhombiicosidodecahedron
SmallStellatedDodecahedron
SnubCube
SnubDodecahedron
TetrakisHexahedron
TrapezoidalHexecontahedron
TrapezoidalIcositetrahedron
TriakisIcosahedron
TriakisOctahedron
TriakisTetrahedron
TruncatedCuboctahedron
TruncatedDodecahedron
TruncatedHexahedron
TruncatedIcosahedron
TruncatedOctahedron
TruncatedTetrahedron
cube
cuboctahedron
dodecahedron
