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Lesson 8-7 Holt Math Course 2

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1. 1. Classifying Quadrilaterals Math 2 Lowell Middle School Mrs. MacDermaid
3. 3. Special Quadrilaterals • Parallelogram • Rectangle • Rhombus • Square • Trapezoid
4. 4. Parallelogram • Both pairs of opposite sides are parallel and congruent. Both pairs of opposite angels are congruent.
5. 5. Rectangle • Parallelogram with four right angles.
6. 6. Rhombus • Parallelogram with four congruent sides
7. 7. Square • Parallelogram with four congruent sides and four right angles.
8. 8. Trapezoid • Exactly one pair of opposite sides is parallel.
9. 9. Classifying Quadrilaterals • Quadrilaterals can have more than one name because the special quadrilaterals sometimes share properties. • The best name is the one that is the most specific.
10. 10. How the Quadrilaterals are Related (Venn Diagram) Parallelograms Squares Rectangles Rhombuses Quadrilaterals Trapezoids
11. 11. How the Quadrilaterals are Related (Concept Map) Parallelograms Squares RectanglesRhombuses Quadrilaterals TrapezoidsOther
12. 12. Try This! • Give all the names that apply to each quadrilateral. Then give the name that best describes it.
13. 13. Try This! • Give all the names that apply to each quadrilateral. Then give the name that best describes it. • The figures has opposite sides that are parallel so it is a parallelogram. • The figures has four right angles, so it is a rectangle. • Rectangle is more specific so it is the best name.
14. 14. Try This! • Give all the names that apply to each quadrilateral. Then give the name that best describes it.
15. 15. Try This! • Give all the names that apply to each quadrilateral. Then give the name that best describes it. • The figures has exactly one pair of opposite sides that is parallel, so it is a trapezoid.. • Trapezoid is the name that best describes this quadrilateral.
16. 16. Clip Art Credits • Slide #2 Microsoft Office Clip Art Gallery http://office.microsoft.com/en-us/images/results.aspx?qu=geometric%20shapes#ai:MC900048066| http://office.microsoft.com/en-us/images/results.aspx?qu=geometric%20shapes#ai:MC900048064| http://office.microsoft.com/en-us/images/results.aspx?qu=geometric%20shapes#ai:MC900048068| http://office.microsoft.com/en-us/images/results.aspx?qu=geometric%20shapes#ai:MC900048065 • All other Slides Original line drawings by Sharon MacDermaid
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