35 Answered Questions for the topic Parallelograms

01/14/15

Prove that if a quadrilateral is a parallelogram then one pair of opposite angles are congruent
Given :  〉ABCD   Prove: ∠D ≅ ∠B   _D______________C|                  1      / | |                    /   4  | |                  /        ||               /           | |          /        ... more
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Parallelograms Trigonometry Triangles

09/10/14

In the parallelogram ABCD
m(<B)=60• ,it's perimeter=13cm and the length of the minor diagonal=3.5cm find the length of AB and BC
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Parallelograms Diagonals

06/10/14

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?
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04/28/14

Parallelogram angles?
Do the angles of a parallelogram have a certain measure or do they just have different measures in each problem?
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07/31/13

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.
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Parallelograms Area

05/20/13

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.
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Parallelograms

03/10/13

how do I find the area of a parallelogram?
I have been having trouble with parallelograms.
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Parallelograms Geometry Geometric Proofs

12/13/12

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
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Parallelograms

12/10/12

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                                                                 52                                                             70 ... more
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Parallelograms Perimeter

12/07/12

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.
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