Sum of interior and exterior angles in polygon

Angles in Polygons

The exterior angles of a polygon add up to 360^o

Multiple Choice

The exterior angles of a polygon add up to...

• 360^o

• 180^o

• 200^o

• 90^o

Multiple Choice

What is the size of angle a?

• 72

• 55

• 50

• 53

Multiple Choice

What is the size of the exterior angle of a pentagon?

• 100^o

• 360^o

• 72^o

• 180^o

Names of Polygons

• A 3-sided polygon is called a TRIANGLE

• A 4-sided polygon is called a QUADRILATERAL

• A 5-sided polygon is called a PENTAGON

• A 6-sided polygon is called a HEXAGON

• A 8-sided polygon is called a OCTAGON

• A 9-sided polygon is called a NONAGON

• A 10-sided polygon is called a DECAGON

Multiple Choice

How many sides does a hexagon have?

• 4

• 5

• 8

• 6

Find the Interior Angle Sum of a Pentagon

Multiple Choice

Find the Interior Angle Sum of a Hexagon

• 360

• 720

• 1080

• 1260

Multiple Choice

What is the formula for finding the sum of the interior angles of a polygon?

• S= (n-2)180
• S= (n-180)2
• S= (n-2)180/n
• S= (n - 180)2/n

Multiple Choice

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

• 180(n-2)
• 180
• (180(n-2))/n
• 360

Multiple Choice

What is the SUM of the angle measures in a triangle?

• 60°
• 90°
• 120°
• 180°

Multiple Choice

Find the measure of angle E.

• 9
• 97°
• 48°
• 79°

Multiple Choice

Solve for x. 

• 100
• 120
• 125
• 130