1. 11/18/09Polygon diagonals EQ: How do you know if the polygon’s diagonals are parallel or perpendicular to it’s sides?

2. Review: What is a side? What is a line of symmetry? What is a diagonal?

3. Review: What is parallel? What is perpendicular?

4. Review: What is parallel? What is perpendicular?

5. Review: Draw a square. Where are sides perpendicular? Where are lines parallel?

6. Review: Draw a parallelogram. Where are sides perpendicular? Where are lines parallel?

7. Review: Draw a trapezoid. Where are sides perpendicular? Where are lines parallel?

8. Review: Draw a regular pentagon. Where are sides perpendicular? Where are lines parallel?

9. Review: Draw a regular pentagon. Where are sides perpendicular? Where are lines parallel?

10. Sort cards Is the line drawn a diagonal A line of symmetry Or both?

11. Sort cards Sort cards on Venn diagram And glue down. DO NOT Glue page into notebook (yet).

12. Make a chart

13. Make a chart Use the figures on the Venn diagram. Use the figures with a diagonal. Check that circle.

14. Make a chart What are the names of the figures with a diagonal? Fill in the column 1 with these names

15. Make a chart Rhombus Regular pentagon Hexagon Square

16. Make a chart Parallelogram Rectangle Pentagon

17. Make a chart Now, which ones have diagonals that are perpendicular to sides? Check that column Use index card to help

18. Make a chart Now, which ones have diagonals that are parallel to sides? Check that column Use index card to help

19. Make a chart What did you discover? EQ: How do you know if the polygon’s diagonals are parallel or perpendicular to it’s sides?