Polygons
Interior and exterior angles of a polygon
Vocabulary
What Am I?
T or F
Find the missing angle
100
I have 4 sides. What am I called?
Quadrilateral
100
What is the formula use to find the sum of the interior angles of an n-gon.
S = (n-2)180
100
What is a polygon?
A Polygon is a closed plane figure formed by three or more segments.
100
The sum of my interior angle measures is 360. How many sides do I have?
4 sides.
100
All polygons are concave?
False, not all polygons are concave. Some are convex
100
I am a quadrilateral and three of my angles have the following measures: 43, 82, and 129. Find the missing angle.
106
200
I have 6 sides. What am I called?
Hexagon
200
What is the sum of the interior angle measures of an 11-gon?
1620
200
What is a diagonal?
A diagonal is a segment that connects to nonconsecutive vertices.
200
The sum of my interior angle measures is 720, how many sides do I have?
6 sides
200
A polygon has the same number of vertices as sides.
True.
200
I am a hexagon and five of my angles are 132, 120, 118, 103 and 154. What is the measure of the my missing angle?
93
300
I have 10 sides. What am I called?
Decagon
300
What is the formula use to find the measure of each interior angle of a regular n-gon?
(n-2)180/n
300
What is a vertex?
Is the point where two sides meet.
300
The sum of my interior angle measure is 1440, how many sides do I have?
10 sides.
300
An equiangular polygon is a polygon that has equal sides?
False
300
The measure of each of my interior angle of my regular polygon is 108. What is the measure of each of my exterior angle?
72.
400
I have 8 sides. What am I called?
Octagon
400
What is the measure of one exterior angle of a regular octagon?
45 degrees
400
What is a regular polygon?
A regular polygon is a polygon that is equilateral and equiangular.
400
All my sides and angles are equal, what am I?
A regular polygon
400
Is a polygon with two sides possible?
False. A polygon has at least 3 sides.
400
Find the measure of each interior and exterior angle of a regular 15-gon?
Interior angle:156
Exterior angle: 24
500
I have 25 sides, what am I called?
25-gon
500
What is the measure of each interior angle of a regular octagon?
135
500
Both of these shapes are regular pentagons. What vocabulary words would you use to describe how they are different?
convex & concave polygons
500
I am a figure with only two dimensions: length and width, what am I called?
2D
500
Polygon are made of straight lines and the shape is closed.
True
500
I am a heptagon with the following 6 angle measures: 139, 106, 129, 112, 141, and 147. Find my missing angle.
126