Top voted answer by
Hassan H.
Raleigh, NC

+ -
I think I have to prove that the other opposite sides are also parallel, but I am not sure how to do it. It is given that the other opposite sides are congruent and parallel.

Answered by
Roman C.
Brookline, MA

+ -
Find the area of the parallelogram spanned by the vectors <1, 0, -1> and <-2, 2, 0>.
I have troubles with dot products.

Latest answer by
Luis A.
Miami, FL

+ -
I have been having trouble with parallelograms.

Latest answer by
Bill F.
Round Rock, TX

+ -
Prove that ABDE is a parallelogram and prove that if the altitudes on AC from d and b are egual,then AC bisects bd

Latest answer by
Cheryl N.
Dallas, TX

+ -
the shape is a parallelogram there is x________________w
...

Latest answer by
Elena C.
Reston, VA

+ -
Quad. DECK is a parallelogram. Complete.