Proving Quadrilaterals Are Parallelograms

Is this a parallelogram? How do we know?

• yes,opposite sides are congruent

• no we can not prove it is a parallelogram

• yes, one pair of sides are congruent and parallel

• yes, opposite sides are parallel

• yes, diagonals bisect each other

Which of the following cannot be used to prove a shape is a parallelogram?

• Both pairs of opposite sides parallel

• Both pairs of opposite sides congruent

• One pair of opposite sides congruent

• Both pairs of opposite angles congruent

Is there enough information to determine that this quadrilateral is a parallelogram?

• yes
• no

Is there enough information to determine that this quadrilateral is a parallelogram?

• yes
• no

Is there enough information to determine that this quadrilateral is a parallelogram?

• yes
• no

In order for ABCD to be a parallelogram, what must the value of x be?

• 132
• 66
• 114
• 48

Find m∠FHJ

• 70

• 82

• 152

• 28

Is the quadrilateral a parallelogram?

• Yes

• No

• Not enough information.

Is the quadrilateral a parallelogram?

• Yes

• No

• Not enough information.

Is there enough information to determine that this quadrilateral is a parallelogram?

• yes
• no