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# How do i solve for X knowing the length of half of a diagonal and the whole length of the same diagonal?

I have a parallelogram labeled TSQR and H is the midpoint. I am supposed to solve for X given SH= 2x+7 and SQ= 2x+14, how do i setup the equation to solve for X?

# Prove: if a quadrilateral has one pair of sides both parallel and congruent then the quadrilateral is a parallelogram.

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.

# Find the area of the parallelogram?

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

# how do I find the area of a parallelogram?

I have been having trouble with parallelograms.

# In the isosceles Prove that ABDE Is a parallelogram

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

# we have 52 at the top and 70 at the bottom and are ask to tell what 3x+22 what is x

the shape is a parallelogram   there is   x________________w                                                                ...

# If DE=x+y, EC=12, CK=2x-y, and KD=3x-2y, then x=?, y=?, and the perimeter of DECK=?

Quad. DECK is a parallelogram. Complete.