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Mathematics
Mathematics
Problem
The points
P
(
1
,
2
,
3
)
P(1,2,3)
P
(
1
,
2
,
3
)
,
Q
(
4
,
−
1
,
5
)
Q(4,-1,5)
Q
(
4
,
−
1
,
5
)
,
R
(
7
,
8
,
6
)
R(7,8,6)
R
(
7
,
8
,
6
)
, and
S
(
4
,
11
,
4
)
S(4,11,4)
S
(
4
,
11
,
4
)
are given in space. a. Show that the quadrilateral
P
Q
R
S
PQRS
P
QR
S
is a parallelogram. b. Find the area of the parallelogram
P
Q
R
S
PQRS
P
QR
S
in exact form.
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