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Geo. 6.2 Properties of Parallelograms
Contributed by: DiLaura
(Original author: Maynard)
Fill in the blank:

a PARALLELOGRAM is a quadrilateral with two pairs 

of _____________________ sides. 
parallel 
perpendicular
skew
proportional

If a quadrialteral is a paralellogram, then it's opposite SIDES are ...

perpendicular and congruent

parallel and half the measure

parallel and congruent

skew and congruent

Fill in the blank:

Consecutive angles (adjacent angles) of a parallelogram 


are _________________ supplementary. 

Never

Always

Sometimes

FACT: Parallelograms diagonals 
bisect each other. 
▱STUD has 
segments TN = 14 
and UN = 10.

Find the following:
diagonal TD = 
S
T
SN = 
N
D
U
FACT: Opposite angles of a parallelogram
are congruent. 

Consecutive angles of a parallelogram 
are supplementary.
Given ABCD is a parallelogram, find the measure of:
Angle B =
Angle A = 
degrees
degrees
71o
FACT: Opposite SIDES of a parallelogramare congruent. 
Given ABCD is a parallelogram, find the measure of:
Perimeter ABCD
 DC =
12
16.4
Which fact about parallelograms will you use to answer this question?
ABCD is a parallelogram.
Find the value of x and y
diagonal bisect each other. 
opposite sides are parallel
opposite sides are congruent
opposite angles congruent, consecutive     angles are supplementary.
C

y

A
130

(2x+10)

D
x =


y =
B

Given parallelogram ABCD,

find each measure listed below.
33o
120o
y
x
z
y=
z=
x =
▱OLMN is shown at the right. 
Find the value ofx and y. 
Which fact about parallelograms will you use to answer this?
opposite sides are parallel
opposite sides are congruent
opposite angles are congruent, 
consecutive angles are supplementary
diagonals bisect each other
x = 
y = 
Given parallelogram EFGH.Side EF is 3 times longer than FG. 
If the perimeter ofEFGH is 72 inches.
Find the length of HG. 
HG =
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