Polygons

What is a polygon?

• A closed plane figure made up of line segments
• An open plane figure made up of line segments
• A closed plane figure made up of rays
• An open plane figure made up of rays

Is the figure a polygon? Is it convex or concave?

• Not a polygon, convex
• Polygon, convex
• Not a polygon
• Polygon, concave

Is the figure a polygon? Is it convex or concave?

• Not a polygon, convex
• Polygon, convex
• Not a polygon
• Polygon, concave

Is the figure a polygon? Is it convex or concave?

• Not a polygon, convex
• Polygon, convex
• Not a polygon
• Polygon, concave

Convex or Concave?

• Convex
• Concave

This polygon is classified as ....

• a hexagon

• a heptagon

• an octogon

• a nonagon

Convex or Concave?

• convex
• concave

What is this shape?

• ray
• trapezoid
• parallelogram
• rhombus

This is a pentagon. Pentagons have...

• 5 sides and 5 angles
• 3 sides and 2 angles
• 2 sides and 3 angles
• 10 sides all together

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

• 1440°
• 900°
• 1080°
• 1260°