Kyleigh Graham

Kyleigh Graham, Oct 17, 2017


  • 1. Polygon Angle Sum
  • 2. Angle sum theorem
  • 3. Exterior angle sum(From users Mathguru and orchiming)
  • 4. Polygon Exterior Angle Sum Theorem
  • 5. Parallelogram Construction Template & Discovery Lab
  • 6. Parallelograms
  • 7. Consecutive interior angles
  • 8. consecutive angles (2)
  • 9. consecutive angles (2)
  • 10. quadrilaterals
  • 11. Transversals and Parallel Lines
  • 12. Transversals
  • 13. properties of a rhombus
  • 14. area of a parallelogram
  • 15. Square Action!
  • 16. Kite Template: Scaffolded Investigation
  • 17. Properties of Isosceles Trapezoids
  • 18. Kite properties
  • 19. Midsegments
  • 20. concave angle
  • 21. parallelogram

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Polygon Angle Sum

This demonstrates that the angle sum is 180[sup]o[/sup] times the number of triangles, which is 2 less than the number of sides. 180[sup]o[/sup] (n – 2)
Polygon Angle Sum #1
This demonstrates that the angle sum is 360[sup]o[/sup] less than 180[sup]o[/sup] times the number of triangles drawn from the center. 180[sup]o[/sup] n – 360[sup]o[/sup]
Polygon Angle Sum #2
– Steve Phelps

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