Geom. & Alg. Quadrilateral & Polygons

Terry Lee Lindenmuth, 5/2/2016

Geometry & Algebra: Quadrilaterals & Polygons


  • 1. Exterior Angles of a Quadrilateral (Convex)
  • 2. Sum of the Exterior Angles of a Convex Pentagon
  • 3. Exterior Angles of a Polygon
  • 4. Sum of Angles of a Triangle
  • 5. Sum of Angles of Quadrilateral
  • 6. Sum of the Interior Angles of a Quadrilateral
  • 7. Sum of the Interior Angles of a Pentagon
  • 8. Explore Properties of Polygon Angles and Quadrilaterals
  • 9. Explore Properties of Quadrilaterals
  • 10. Parallelograms
  • 11. Parallelogram
  • 12. Properties of a Rhombus
  • 13. A Dynamic Kite
  • 14. Trapezoid
  • 15. Creating a Dynamic Rectangle
  • 16. GEOM Construction Menu 03
  • 17. Turtle robot control
  • 18. Turtle with Geometry
  • 19. Circle: Inscribed v Central Angle
  • 20. Inscribed Angle in Semi-Circle
  • 21. Area of Trapezoid - The Formula Discovered
  • 22. Mid-Segments of a Triangle
  • 23. Discussion: Area of a Trapezoid Formula
  • 24. Constructing Parallelograms by Constructing Diagonals
  • 25. Exploring Shapes Created by Constructing Diagonals

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Exterior Angles of a Quadrilateral (Convex)

Adjust the Quadrilateral to test your conjectures. Keep the Quadrilateral Convex.
– Terry Lee Lindenmuth

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