lesson 6-4

Is the quadrilateral a parallelogram?

• Yes

• No

• Not enough information.

Determine the value of x that would classify this quadrilateral as a parallelogram. (The expression are for the tick marks on the diagram). 

• x = 8

• x = 26

• x = 28

• x = 38

Is there enough information to determine that this quadrilateral is a parallelogram?

• yes

• no

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

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. 

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. 

Find m∠FHJ

• 70

• 82

• 152

• 28

Parallelograms are ...

• triangles

• quadrilaterals

• pentagons

• hexagons

If Quadrilateral ABCD is a Parallelogram the measure of ∠C is 

• 68°

• 112°

• 22°

• 158°

In a parallelogram, diagonals are __________.

• perpendicular

• bisected

• congruent

• parallel