## Categories of quadrilaterals based on sides and angles.

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### Topic

Measuring and classifying quadrilaterals in the real world.

### Vocabulary

• parallelogram
• rectangle
• rhombus
• square
• trapezoid
• isosceles trapezoid
• kite
• dart

### Extension Investigation

1. Students will identify triangles in their classroom or school and do a presentation on what they found. See an example here:
2. Students will do a project involving classification of quadrilaterals. An example project
3. Each student will bring or take a photo of a parallelogram, rectangle, rhombus, square, trapezoid, isosceles trapezoid, kite or dart. Lesson plans are here: http://www.digitalwish.com/dw/digitalwish/view_lesson_plans?id=3446
http://www.uen.org/Lessonplan/preview.cgi?LPid=5440

#### Layering (optional)

Virtual Pinboard, Polygon Sort, Shapes http://www.crickweb.co.uk/ks2numeracy-shape-and-weight.html

Mathematics - Investigating Geometry II: Classifying Quadrilaterals

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