Area and Perimeter of Composite polygonal shapes

1
Area and Perimeter of Composite polygonal shapes
http//hench-maths.wikispaces.com
2
Learning Sequence

• Conversion of units
• Perimeter of Polygons
• Area of Polygons (individual shapes)
• Parallelograms, Triangles, Trapezium
• Perimeter and area of compound shapes with
  polygons

3
Preliminary Activities

• Digilearn Area of Compound shapes Basic
• Complete at least 2 of these shapes
• Digilearn Area of Triangles
• Complete at least one question at each level
• NVLM Tangrams
• Do one tangram use hints if needed
• Digilearn Compound shapes advanced
• Do at least two from the small category

4
After completing online activities

• Review the formulas for Perimeter and Area of
  polygons on the next slide
• View the animated worked example on the following
  slides
• Complete the written assessment task and hand it
  in for assessment

5
Formulas for Quadrilaterals
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Example
6cm
8cm
8cm
12cm
7
6cm
8cm
12cm
-
8cm

4cm
4cm
8
12cm
6cm
-

8cm
8cm
4cm
4cm
4cm
Total Area 9640-8 128cm2