HW on Parallelograms and Diagonals

If you think this shape is a parallelogram, which of the following could prove it?

• Opposite Sides are congruent

• Opposite sides are parallel

• Diagonals are congruent

• Diagonals bisect each other

• Diagonals are perpendicular

How would you prove the opposite sides of a parallelogram are parallel?

• Slope

• Distance Formula

• Midpoint

How would you prove that the diagonals of a parallelogram bisect each other?

• Slope

• Distance Formula

• Midpoint

• Guess

The figure is a parallelogram.  
Solve for x.  

• 1
• 11
• 7
• 6

Which shape is NOT a type of parallelogram?

• trapezoid
• rectangle
• rhombus
• square

A square is a rectangle.

• Always
• Sometimes
• Never

If AD = 10, then BC = ?

• 10

• 5

• 20

• Not enough info

If AC = 15, then AX = ?

• 7.5

• 15

• 30

• Not enough info

Julia proved ETNU is a parallelogram. She notices that side ET has a slope of 1/2 and EN has a slope of -2. What can she classify ETNU as?

• A rectangle

• A square

• A rhombus

• Just a parallelogram

Julia proved ABCD is a parallelogram. She notices that side AB has a slope of 8/3 and BC has a slope of 1/3. What can she classify ABCD as?

• A rectangle

• A square

• A rhombus

• Just a parallelogram