WOLFRAM
|
DEMONSTRATIONS PROJECT
A Geometrical Theorem of Leibniz
2
P
R
+
2
P
S
+
2
P
T
≈
3
6
3
.
4
1
1
3
(
2
R
S
+
2
S
T
+
2
T
R
)
+
3
2
P
C
≈
3
6
3
.
4
1
L
e
t
P
b
e
a
p
o
i
n
t
i
n
t
h
e
p
l
a
n
e
o
f
t
h
e
t
r
i
a
n
g
l
e
R
S
T
a
n
d
C
b
e
t
h
e
c
e
n
t
r
o
i
d
o
f
R
S
T
.
T
h
e
n
2
P
R
+
2
P
S
+
2
P
T
=
1
3
(
2
R
S
+
2
S
T
+
2
T
R
)
+
3
2
P
C
.