Polygon Formulas & Application

What does this formula find?

• Central Angle of a Regular Polygon
• Interior Angle of a Regular Polygon
• Sum of Interior Angles
• Exterior Angle of a Regular Polygon

What does this formula find?

• Central Angle of a Regular Polygon
• Interior Angle of a Regular Polygon
• Sum of Interior Angles
• Number of Sides

What does this formula find?

• Central Angle of a Regular Polygon
• Interior Angle of a Regular Polygon
• Sum of Interior Angles
• Exterior Angle of a Regular Polygon

What does this formula find?

• Number of Sides
• Interior Angle of a Regular Polygon
• Sum of Interior Angles
• Exterior Angle of a Regular Polygon

Given a Regular Decagon
Find the measure of the exterior angle

• 36^o
• 72^o
• 60^o
• 45^o

Given a Regular Decagon
Find the measure of the sum of the interior angles

• 1080^o
• 1440^o
• 144^o
• 1250^o

Given a Regular Decagon
Find the measure of the central angle

• 144^o
• 72^o
• 60^o
• 36^o

Given a Regular Decagon
Find the sum of the exterior angles

• 144^o
• 360^o
• 720^o
• 1440^o

Given a Regular Decagon
Find the measure of each interior angle

• 144^o
• 360^o
• 720^o
• 1440^o

Which should you use to solve for x?

• Find the Central Angle
  360÷n
• Find the Sum of Exterior ∠'s
  360^o
• Find the Sum of Interior ∠'s
  180(n-2)
• Find each Interior ∠
  180(n-2)÷n