WOLFRAM
|
DEMONSTRATIONS PROJECT
Fuhrmann's Theorem
A
B
≈
0
.
8
5
E
D
≈
0
.
6
9
B
C
≈
1
.
2
1
E
F
≈
0
.
8
4
C
D
≈
1
.
5
4
F
A
≈
0
.
7
7
A
D
≈
1
.
8
5
B
E
≈
1
.
9
1
C
F
≈
1
.
9
9
A
D
×
B
E
×
C
F
≈
7
.
0
2
A
B
×
E
D
×
C
F
+
A
F
×
C
D
×
B
E
+
B
C
×
E
F
×
A
D
+
A
B
×
C
D
×
E
F
+
D
E
×
F
A
×
B
C
≈
7
.
0
2
L
e
t
A
B
a
n
d
E
D
,
B
C
a
n
d
E
F
,
a
n
d
C
D
a
n
d
F
A
b
e
t
h
r
e
e
p
a
i
r
s
o
f
o
p
p
o
s
i
t
e
s
i
d
e
s
i
n
a
c
o
n
v
e
x
c
y
c
l
i
c
h
e
x
a
g
o
n
A
B
C
D
E
F
.
T
h
e
n
A
D
×
B
E
×
C
F
=
A
B
×
E
D
×
C
F
+
A
F
×
C
D
×
B
E
+
B
C
×
E
F
×
A
D
+
A
B
×
C
D
×
E
F
+
D
E
×
F
A
×
B
C
.
D
r
a
g
t
h
e
o
r
a
n
g
e
p
o
i
n
t
s
t
o
c
h
a
n
g
e
t
h
e
f
i
g
u
r
e
.
