peh1

Hp ... helical surface 1

peh2

Hp ... helical surface 2

peh3

Hp ... helical surface 3

peh4

Hp ... helical surface 4

peh5

Hp ... helical surface 5

izh1

Hi ... helical surface 1

izh2

Hi ... helical surface 2

izh3

Hi ... helical surface 3

izh4

Hi ... helical surface 4

izh5

Hi ... helical surface 5

izh6

Hi ... helical surface 6

rss1

open ruled screw surface 1

rss2

open ruled screw surface 2

rss3

closed ruled screw surface

helikoid

helicoids

cpss

circular screw surface 1

ciss

circular screw surface 2

prev1

Sp ... surface of revolution 1

prev2

Sp ... surface of revolution 2

prev3

Sp ... surface of revolution 3

prev4

Sp ... surface of revolution 4

prev5

Sp ... surface of revolution 5

prev6

Sp ... surface of revolution 6

irev1

Si ... surface of revolution 1

irev2

Si ... surface of revolution 2

irev3

Si ... surface of revolution 3

irev4

Si ... surface of revolution 4

irev5

Si ... surface of revolution 5

irev6

Si ... surface of revolution 6

itor1

Ti ... spindle torus

itor2

Ti ... horn torus

itor3

Ti ... ring torus

ptor

Tp ... torus