Proving Quadrilaterals Algebraically

For what value of x is the figure a parallelogram?

• -8

• 8

• -13

• 13

For what value of x is the figure a parallelogram?

• 3.43

• 12

• 10

• 8.12

For what value of x and y is the figure a parallelogram?

• x=20

  y=24

• x=0

  y=24

• x=20

  y=12

• x=0

  y=12

State the theorem you can use to show that the quadrilateral is a parallelogram.

• Parallelogram Opposite Sides Converse

• Parallelogram Diagonals Converse

• Definition of a Parallelogram

• Not Possible

State the theorem you can use to show that the quadrilateral is a parallelogram.

• Parallelogram Opposite Sides Parallel and Congruent Theorem

• Parallelogram Opposite Sides Converse

• Parallelogram Opposite Angles Converse

• Definition of a Parallelogram

State the theorem you can use to show that the quadrilateral is a parallelogram.

• Parallelogram Opposite Sides Parallel and Congruent Theorem

• Parallelogram Opposite Sides Converse

• Definition of a Parallelogram

• Not Possible

Determine the value of x and y that would classify this quadrilateral as a parallelogram. 

• x = 9 ; y = 16

• x = 16; y = 9

How long is the side CD?

• 7

• 3

• 35

• 27

Find the value of x that makes the quadrilateral a parallelogram.

• 41

• 12

• 14

• This quadrilateral cannot be a parallelogram.

Find the value of x that makes the quadrilateral a parallelogram.

• 5

• 35

• 75

• 55