6-1 Classwork (Angles of Polygons)

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

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

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

Polygon or Non-Polygon?

• Polygon
• Non-Polygon

Polygon or non-polygon?

• Polygon
• Non-Polygon

The shapes in the pictures are all--

• Triangles
• Trapezoids
• Parallelograms
• Heptagons

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

REGULAR in math terms means...

• Normal

• Two sides have the same length

• All sides are equal and all angles are equal

• It has right angles

Find the sum of the angle measure of the polygon.

• 1080 degrees

• 1440 degrees

• 1260 degrees

• 1800 degrees

Find the sum of the angle measure of a heptagon.

• 900 degrees

• 1080 degrees

• 1260 degrees

• 720 degrees

Find the measure of each interior angle of the regular polygon.

• 108 degrees

• 540 degrees

• 180 degrees

• 300 degrees