8.1-8.3 Quadrilateral Quiz

What is the SUM of the angle measures in a nonagon (9 sides)?

• 1440°

• 900°

• 1080°

• 1260°

What is the measure of ONE interior angle in a regular pentagon (5-sides)?

• 90°

• 108°

• 120°

• 180°

Find the angle sum of the interior angles of the polygon.

• 180° 

• 540° 

• 720° 

• 1080° 

What's x?

• 1080°

• 45°

• 135°

• 1440°

The figure is a parallelogram.  
Solve for x.  

• 7

• 2

• 0

• 4

Which is NOT a property of a parallelogram?

• Diagonals bisect each other

• Diagonals are congruent

• Both pairs of opposite sides are parallel

• Both pairs of opposite angles are congruent

The figure is a parallelogram.  
Solve for x.  

• 12

• 4

• 6

• 2

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. 

On page 520 #2, use your own words to answer in complete sentences:

Writing: A quadrilateral has four congruent sides. Is the quadrilateral a parallelogram? Justify your answer.

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