Parallelogram Proofs

L6-3 Notes -- Tests for Parallelograms

What information is necessary to prove a quadrilateral is a parallelogram?

Multiple Choice

Does the condition below guarantee that the figure is a parallelogram

All four angles are right angles

• Yes

• No

Multiple Choice

Which slopes must be the same for this to be a parallelogram? 

• Both AD and CB,   and    AB and CD
• AD and CB
• AB and CD
• AC and BD

Multiple Choice

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

Multiple Choice

Is the quadrilateral a parallelogram? If yes, pick the statement that explains why.

• Opposite sides parallel

• Opposite sides equal

• Opposite sides parallel and equal

• Not enough info

Multiple Choice

Is this quadrilateral a parallelogram?

• Yes. Diagonals bisect each other
• no
• Yes. Opposite angles are congruent
• Yes. Opposite sides are congruent

Multiple Choice

What are the values of x, y, and z for this to be a parallelogram?

• x=145, y=145,z=145

• x=145, y=35, z=35

• x=35,y=145, z=35

• x=35, y=35, z=145

Multiple Choice

Does the condition below guarantee that the figure is a parallelogram

Two sides are parallel

• Yes

• No

Multiple Choice

Does the condition below guarantee that the figure is a parallelogram

Two sides are parallel

• Yes

• No