Dreiecksflaecheninhalt
A
=
1
2
|
a
→
⨯
b
→
|
Parallelogrammflaecheninhalt:
A
=
|
a
→
⨯
b
→
|
Parallelogrammvolumen:
V
=
|
(
a
→
⨯
b
→
)
⋅
c
→
|