Polygon Basics

Which shape is not a polygon

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This polygon is

• Regular pentagon

• Regular hexagon

• Irregular pentagon

• Irregular hexagon

What is the perimeter of this polygon?

• 24 centimeters

• 22 centimeters

• 32 centimeters

• 42 centimeters

What is the perimeter of this polygon?

• 16 centimeters

• 18 centimeters

• 17 centimeters

• 20 centimeters

What is the perimeter of this polygon?

• 13 centimeters

• 20 centimeters

• 22 centimeters

• 24 square centimeters

The measure of any Interior angle of a convex polygon must be less than what value?

• 180

• 360

• 176

• 90

Into how many non-overlapping triangles can you divide a 57-gon?

• 55

• 57

• 2

• 180

• Can't tell.  Don't try to trick me!

• Yes. What, you think I can't use a calculator?

• No. At first, I didn't remember what a decagon was, but now that I know, there's no way this could be regular!

Let's say x is the combined measure of 3 exterior angles of a regular polygon. Which equation below will correctly find n, the number of sides?

• 123

• 135
  

• 172

• 125