Vocabulary
Name that Polygon
Angle Measures
Formulas
This & That
100
Triangles, quadrilaterals, and pentagons are all what?
Polygons
100
I have 3 sides. What am I called?
Triangle
100
What is the sum of the interior angles in a regular convex nonagon?
1260°
100
What is the sum of the exterior angles in any polygon?
360°
100
If one interior angle in a polygon measures 156°, then what is the measure of one exterior angle?
24°
200
What does congruent mean?
same or equal
200
What is the name of a polygon with 5 sides?
Pentagon
200
What is the measure of one interior angle in a decagon?
144°
200
Sum of interior angles of a polygon
180(n - 2)
200
Which polygon has an interior angle sum of 720°?
Hexagon - 6 sided figure
300
I am an angle that measures 90°, what is my name?
Right Angle
300
What is the name of a polygon with 9 sides?
Nonagon
300
If the exterior angle of a regular polygon measures 45°, how many sides does the polygon have?
8 sides
300
Exterior angle of a regular polygon
360 / n
300
Given the polygon, find x and y.
x = 110°
y = 70°
400
The point where all sides meet
Vertex
400
What is the name of a polygon with 7 sides?
Heptagon
400
In a 15-gon, 14 angle measures equal 2200. What is the measure of the fifteenth angle?
140°
400
Finding one interior angle in a regular polygon
(n - 2) 180 / n
400
x = 12
500
An exterior angle is an angle formed by an (1)__________ of a side and the (2)_________ of the polygon
(1) extension
(2) side
500
What is the name of a polygon with 12 sides?
Dodecagon
500
If the interior angle of a regular polygon measures 108°, how many sides does the polygon have?
5 sides
500
What is the sum of the measures of an interior and exterior angle?
180°
500
228°