Polygon vs Not a Polygon

Which of these figures are considered polygons?

• a, b, c, d
• b, d, e, f
• a, b, c
• a, e, f

A POLYGON IS:
A figure that curves

• correct
• incorrect
• not sure

A POLYGON IS:
A figure that crosses

• correct
• incorrect
• not sure

A POLYGON IS:
A figure with closed lines

• correct
• incorrect
• not sure

A POLYGON IS:
A figure with more than 2 sides

• correct
• incorrect
• not sure
• true

What is a polygon?

• A closed figure made up of straight line segments
• An open figure made up of straight line segments
• A closed figure made up of curved edges
• An closed figure made up of crossed line segments

Which of the following is not a polygon?

• trapezoid
• semicircle
• rhombus
• octagon

What is a vertex?

• The point where two waves meet
• The point where two lines meet
• The point where two sides meet
• The point where two segments meet

Polygon or Non-Polygon?

• Polygon
• Non-Polygon

Is this shape a POLYGON?

• Yes
• No