Parallelograms

If ABCD is a parallelogram, what is the length of BD? 

• 10

• 11

• 7

• 5

The opposite angles of a parallelogram are ...

• complementary

• congruent

• supplementary

• perpendicular

Which property is shown with the markings in the diagram?

• One pair of opposite sides are congruent and parallel

• Opposite angles congruent

• Opposite sides are parallel

• diagonals bisect each other

Which property is shown with the markings in the diagram?

• One pair of opposite sides are congruent and parallel

• Opposite angles congruent

• Opposite sides are parallel

• diagonals bisect each other

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

• Yes, Opposite sides parallel

• Yes, Opposite angles equal and consecutive angles are supplementary.

• Yes, Opposite sides equal and parallel

• Not enough info

Based on the markings, 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

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

Is it a parallelogram? How do we know?

• yes opposite sides are parallel

• yes opposite sides are congruent

• opposite angles are congruent

• one pair of opposite sides congruent and parallel

• no

Is this shape a parallelogram? If yes, how can you tell?

• Yes, the opposite angles are congruent

• Yes, the consecutive angles are supplementary.

• Yes, the diagonals bisect each other.

• No, it is not a parallelogram.

State which method we can use to show that the quadrilateral is a parallelogram. 

• Both pairs of opposite angles are congruent.

• Both pairs of opposite sides are congruent.

• Both pairs of diagonals bisect each other.

• Both pairs of opposite sides are parallel.