Polygons, Sum of Interior Measures, Congruent Polygons

Find the sum of the interior angles of a nonagon.

• 1260

• 900

• 1620

• 180

What is the SUM of the angle measures in a hexagon (6 sides)?

• 720°

• 1080°

• 600°

• 540°

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

What is the name of this polygon?

• a pentagon

• a quadrilateral

• an octagon

• a triangle

Find the sum of the interior angle measures of a convex 20-gon.

• 3240 degrees

• 3600 degrees

• 5400 degrees

• 3060 degrees

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

• Not a polygon, convex

• Polygon, convex

• Not a polygon

• Polygon, concave

What is the sum of a Quadrilaterals interior angles?

What is the measure of one interior angle of a regular hexagon?

• 120

• 60

• 45

• 135

What is the formula for the sum of the interior angles of polygons?

Which ones are always regular polygons?

• isosceles triangle

• rectangle

• square

• arrowhead

• equilateral triangle