Polygons, Sum of Interior Measures, Congruent Polygons

Solve for x.

(a)  

Which of the following shapes are not polygons?

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Tags

CCSS.2.G.A.1

What is a regular polygon?

• A polygon that has 1 set of parallel sides and 1 right angle.

• A polygon that has 2 sets of parallel sides and 2 right angles.

• A polygon that has 2 right angles and 2 sides congruent.

• A polygon in which all sides and all angles are congruent.

Tags

CCSS.2.G.A.1

Find the value of X.

• 60

• 120

• 85

• 55

How many of the following polygons are CONCAVE?

• All are concave

• 1 is concave

• 2 are concave

• None are concave

Tags

CCSS.2.G.A.1

What is the SUM of the angle measures in a DECAGON (10 sides)?

• 1440°

• 900°

• 1080°

• 1260°

What is the sum of the interior angles of the hexagon shown?

• 180° 

• 540° 

• 720° 

• 1080° 

What is the measure of ONE interior angle in a regular pentagon (all sides and angles are congruent)?

• 90°

• 108°

• 120°

• 180°

How do the interior and exterior angles of a polygon relate?

• They add to 90º

• They are congruent

• They add to 180º

• They have no relationship

Find the value of x

• 141

• 150

• 135

• 163