$\text { For the points } A ( 4 , - 1 , - 1 ) , B ( - 1 , - 2,4 ) , C ( 5 , - 4,4 ) , D ( 0 ,- 5,9) \text { : }$
a. Verify that the points are vertices of a parallelogram. Show all work.
b. Find the area of the parallelogram. Show all work.
c. Determine whether the parallelogram is a rectangle.

Question

$\text { For the points } A ( 4 , - 1 , - 1 ) , B ( - 1 , - 2,4 ) , C ( 5 , - 4,4 ) , D ( 0 ,- 5,9) \text { : }$ 
a. Verify that the points are vertices of a parallelogram. Show all work.
b. Find the area of the parallelogram. Show all work.
c. Determine whether the parallelogram is a rectangle.

Quizplus · Accepted Answer

The Answer of $\text { For the points } A ( 4 , - 1 , - 1 ) , B ( - 1 , - 2,4 ) , C ( 5 , - 4,4 ) , D ( 0 ,- 5,9) \text { : }$ 
a. Verify that the points are vertices of a parallelogram. Show all work.
b. Find the area of the parallelogram. Show all work.
c. Determine whether the parallelogram is a rectangle.

For the points A(4,−1,−1),B(−1,−2,4),C(5,−4,4),D(0,−5,9) : \text { For the points } A ( 4 , - 1 , - 1 ) , B ( - 1 , - 2,4 ) , C ( 5 , - 4,4 ) , D ( 0 ,- 5,9) \text { : } For the points A(4,−1,−1),B(−1,−2,4),C(5,−4,4),D(0,−5,9) :

$\text { For the points } A ( 4 , - 1 , - 1 ) , B ( - 1 , - 2,4 ) , C ( 5 , - 4,4 ) , D ( 0 ,- 5,9) \text { : }$