Exterior angles of polygons

Triangle

What is the sum of all the exterior([b]RED[/b]) angles?

720[math]^\circ[/math] 180[math]^\circ[/math] 900[math]^\circ[/math] 540[math]^\circ[/math] 360[math]^\circ[/math]

Square

What is the sum of all the exterior angles?

540[math]^\circ[/math] 720[math]^\circ[/math] 180[math]^\circ[/math] 900[math]^\circ[/math] 360[math]^\circ[/math]

Pentagon

What is the sum of all the exterior angles?

900[math]^\circ[/math] 180[math]^\circ[/math] 360[math]^\circ[/math] 720[math]^\circ[/math] 540[math]^\circ[/math]

If you look back at your answers, they all added up to 360[math]^\circ[/math][br]Therefore the [b]Sum of the exterior angles add up to 360[math]^\circ[/math][br][/b][br]For regular polygons you can find the value of the exterior angle by:[br][math]\frac{360}{n}[/math] where [b]n [/b]is the number of sides.

Irregular polygon

What kind of polygon is this?

Octagon Hexagon Heptagon Pentagon

What is the sum of all the exterior angles?

720[math]^\circ[/math] 900[math]^\circ[/math] 360[math]^\circ[/math] 540[math]^\circ[/math] 180[math]^\circ[/math]

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

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

Exterior angles of polygons

Triangle

Square

Pentagon

Irregular polygon

What kind of polygon is this?

Information: Exterior angles of polygons