Google Classroom
GeoGebraGeoGebra Classroom
GeoGebra

Exterior angles of polygons

Author:Cameron Ualesi

Triangle

What is the sum of all the exterior(RED) angles?

Select all that apply
  • A
  • B
  • C
  • D
  • E
Check my answer (3)

Square

What is the sum of all the exterior angles?

Select all that apply
  • A
  • B
  • C
  • D
  • E
Check my answer (3)

Pentagon

What is the sum of all the exterior angles?

Select all that apply
  • A
  • B
  • C
  • D
  • E
Check my answer (3)
If you look back at your answers, they all added up to 360 Therefore the Sum of the exterior angles add up to 360 For regular polygons you can find the value of the exterior angle by: where n is the number of sides.

Irregular polygon

What kind of polygon is this?

Select all that apply
  • A
  • B
  • C
  • D
Check my answer (3)

What is the sum of all the exterior angles?

Select all that apply
  • A
  • B
  • C
  • D
  • E
Check my answer (3)

What do you notice about the green and red angles on the straight line?

Check my answer
Use your new knowledge of interior and exterior angles to complete this activity: https://www.transum.org/software/Online_Exercise/PolygonAngles/Default.asp For those that want to extend themselves: https://www.transum.org/software/Online_Exercise/PolygonAngles/Mixture.asp

New Resources

Discover Resources

Discover Topics