Polygons
A measuring device used to measure an angle
How many triangles can you formed in an octagon?
6
A polygon that "caves in" is called:
A. Concave
B. Convex
C. Regular
D. Irregular
A. Concave
What is the sum of all the interior angles of a triangle?
180
A polygon with 20 sides.
Icosagon
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
What is the sum of all the exterior angles of a polygon?
360
How many sides does a dodecagon have?
12 sides
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°
Circle is a polygon.
True or False
NO
What do you call a polygon with all sides and angles equal?
Regular Polygon
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
In a linear pair, the angles add up to:
180
What do you call a polygon with all sides and angles are not equal?
Irregular Polygon
An angle formed outside the polygon when one of its side is extended.
Exterior Angle