Polygons
Sides
Concave/Convex
100

A measuring device used to measure an angle

Protractor
100

How many triangles can you formed in an octagon?

6

100

A polygon that "caves in" is called:
A. Concave
B. Convex
C. Regular
D. Irregular

A. Concave

200

What is the sum of all the interior angles of a triangle?

180

200

A polygon with 20 sides.

Icosagon

200

In a convex polygon, which of the following is always true?
A. No diagonals lie outside the polygon
B. It has at least one reflex angle
C. It has curved edges
D. It has at least one interior angle more than 180°

A. No diagonals lie outside the polygon

300

What is the sum of all the exterior angles of a polygon?

360 

300

How many sides does a dodecagon have?

12 sides

300

What is a convex polygon?
A. A polygon with at least one angle greater than 180°
B. A polygon where all interior angles are less than 180°
C. A polygon with curves
D. A polygon with only three sides

B. A polygon where all interior angles are less than 180°

400

Circle is a polygon.

True or False

NO

400

What do you call a polygon with all sides and angles equal?

Regular Polygon

400

Which of these is an example of a convex polygon? 

A. Star-shaped polygon
B. Equilateral triangle
C. Arrowhead-shaped figure
D. A five-pointed star

B. Equilateral triangle

500

In a linear pair, the angles add up to:

180

500

What do you call a polygon with all sides and angles are not equal?

Irregular Polygon

500

An angle formed outside the polygon when one of its side is extended.

Exterior Angle

M
e
n
u