WOLFRAM
|
DEMONSTRATIONS PROJECT
D
r
a
w
i
n
g
a
C
o
l
o
r
e
d
P
o
l
y
g
o
n
f
a
c
e
e
d
g
e
b
a
c
k
g
r
o
u
n
d
t
h
i
c
k
n
e
s
s
D
r
a
w
p
o
l
y
g
o
n
s
,
a
d
d
i
n
g
a
n
d
d
e
l
e
t
i
n
g
v
e
r
t
i
c
e
s
b
y
A
l
t
-
C
l
i
c
k
i
n
g
.