Properties of Quadrilaterals

What is the best definition of a parallelogram?

• quadrilateral with one pair of parallel sides 
• quadrilateral with two pairs of parallel sides
• any four sided figure with opposite sides congruent 
• a quadrilateral with two pairs of congruent sides

What is the best definition of a rhombus? 

• a square with slanted sides 
• a parallelogram with one pair of congruent sides
• a parallelogram with opposite sides congruent
• a parallelogram with fours sides congruent 

What is the best definition of a rectangle? 

• a parallelogram with four right angles
• a quadrilateral with opposite sides congruent 
• a parallelogram with four congruent sides 
• a quadrilateral with opposite angles congruent 

What is the best definition of a square?

• a rhombus
• a parallelogram with four right angles and four congruent sides
• a rectangle 
•  a nautical urchin that lives in a pineapple under the sea

Rectangles are squares.

• sometimes true
• always true
• never true

Squares are rhombi.

• sometimes true
• always true
• never true

Consecutive angles of a parallelogram are supplementary.

• sometimes true
• always true
• never true

Opposite angles of a square are supplementary.

• always true 
• sometimes true
• never true

Diagonals of a parallelogram bisect each other.

• always true
• sometimes true
• never true

Diagonals of a square are congruent.

• always true
• sometimes true
• never true