G7.4 Parallelogram Proofs (Pd 3/6/7)

Which is NOT a property of a parallelogram?

• Diagonals bisect each other
• Diagonals are perpendicular

• Opposite sides are parallel

• Opposite sides are congruent

In a parallelogram, opposite angles are ________.

• congruent
• supplementary
• consecutive
• parallel

Which statement must be true?

VKLM is a parallelogram. Match the variable to its value.

• 59°

• z

• 64°

• x

• 57°

• y

Write in as many angles as you can.

Use your work from the last question to solve the Regents question.

• (1) 40º

• (2) 70º

• (3) 110º

• (4) 140º

Which quadrilateral can we PROVE is a parallelogram?

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

• Not enough info

• Yes, the opposite sides are parallel

• Yes, the opposite sides are congruent

• Yes, the diagonals bisect each other

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

• Yes, the opposite angles equal

• Yes, the opposite sides equal

• Yes, the diagonals bisect each other

• Not enough info

Is this quadrilateral a parallelogram?

• Yes, the diagonals bisect each other

• Not enough info

• Yes, the opposite sides are congruent

• Yes, the opposite sides are parallel