Know Properties of Quadrilaterals

Is the quadrilateral a parallelogram? If yes, state how you know.

• Opposite sides parallel

• Opposite sides equal

• Opposite sides parallel and equal

• Not enough info

Is this quadrilateral a parallelogram? If so, give a reason.

• No

• Yes. Opposite sides are parallel

• Yes. Opposite sides are congruent

• Yes. Opposite angles are congruent

Which of the following are properties of parallelograms (check all that apply)

• Two pairs of sides are parallel

• Opposite sides are congruent

• Diagonals are congruent

• Diagonals bisect each other

• Opposite angles are supplementary

Based on the provided markings, is there sufficient information to prove the quadrilateral is a parallelogram?

• Yes

• No

• 1
• 10
• 9
• 6

• 10
• 5
• 8
• 3

Which is NOT a property of a parallelogram?

• Diagonals bisect each other

• Diagonals are congruent

• Both pairs of opposite sides are parallel

• Both pairs of opposite angles are congruent

The diagonals of a parallelogram always ... 

• are congruent

• are perpendicular

• bisect each other

• are parallel

In a parallelogram, opposite angles are ________.

• congruent

• supplementary

• consecutive

• parallel

• x = 23, y = 10
• x = 10, y = 23