WOLFRAM
|
DEMONSTRATIONS PROJECT
The Midpoint Quadrilateral Theorem
∠
E
=
∠
G
≅
8
0
°
∠
F
=
∠
H
≅
1
0
0
°
T
h
e
m
i
d
p
o
i
n
t
s
o
f
t
h
e
s
i
d
e
s
o
f
a
n
y
q
u
a
d
r
i
l
a
t
e
r
a
l
f
o
r
m
a
p
a
r
a
l
l
e
l
o
g
r
a
m
.
D
r
a
g
a
n
y
v
e
r
t
e
x
o
f
t
h
e
m
a
g
e
n
t
a
q
u
a
d
r
i
l
a
t
e
r
a
l
A
B
C
D
.
