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GeoGebra Classroom

1.28 Properties of a Parallelogram

Author:Katie Acland, Tim Brzezinski

Use the applet above to explore the properties of a parallelogram. Select the properties that you've observed below.

Select all that apply

A
opposite sides are parallel
B
all 4 sides are congruent
C
only opposite sides are congruent
D
all 4 angles are congruent and measure 90°
E
only opposite angles are congruent
F
adjacent angles are supplementary
G
diagonals bisect one another
H
diagonals are equal length
I
diagonals are perpendicular

Check my answer (3)

Click on "Highlight △ABC" and "Reflect △ABC about diagonal AC". Is AC a line of symmetry of parallelogram ABCD? Why or why not?

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