A polygon...

• is a 2 dimensional shape with some straight sides and some curved sides.

• is a 2 dimensional shape with angles.

• is a closed 2 dimensional shape with straight sides.

• is an open 2 dimensional shape with straight sides.

Answer explanation

A polygon is a flat two-dimensional shape with straight sides that are fully closed. The sides must be straight, not curved. Polygons can have any number of sides.

Is the following shape open or closed?

• open

• shape

Is the following shape open or closed?

• open

• closed

Why are these not polygons?

• They are open

• They are 3D

• They are different colors

A polygon is a 3D shape like a cube.

• TRUE

• FALSE

A regular polygon has ​ (a)   sides and ​ (b)   angles.

• congruent
• round
• straight
• short
• opposite

Answer explanation

A regular polygon has congruent sides and congruent interior angles.

Is this an irregular polygon

• yes

• no

Match the following

• Non Polygon

• 
• Polygon

• 
• Regular Polygon

• 

Answer explanation

Polygons do not have curved sides.

Match the following

• hexagon

• 6 sides

• quadrilateral

• 8 sides

• pentagon

• 5 sides

• heptagon

• 4 sides

• octogon

• 7 sides

Answer explanation

Choose the following images that are a polygons.

• 
• 
• 
•