WOLFRAM
|
DEMONSTRATIONS PROJECT
Hyperboloid as a Ruled Surface
t
w
i
s
t
o
f
t
o
p
r
i
n
g
π
2
n
u
m
b
e
r
o
f
s
t
r
i
n
g
s
4
0
C
o
n
n
e
c
t
t
w
o
c
i
r
c
l
e
s
w
i
t
h
e
l
a
s
t
i
c
s
t
r
i
n
g
s
.
T
w
i
s
t
i
n
g
a
c
i
r
c
l
e
g
e
n
e
r
a
t
e
s
t
h
e
h
y
p
e
r
b
o
l
o
i
d
o
f
o
n
e
s
h
e
e
t
.
S
u
r
f
a
c
e
s
t
h
a
t
a
r
e
g
e
n
e
r
a
t
e
d
b
y
a
f
a
m
i
l
y
o
f
s
t
r
a
i
g
h
t
l
i
n
e
s
a
r
e
c
a
l
l
e
d
r
u
l
e
d
s
u
r
f
a
c
e
s
.
