# Area and Perimeter Worksheets Area and by lwa19935

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```									  Area and Perimeter of
Composite polygonal shapes

http://hench-maths.wikispaces.com
Learning Sequence
1. Conversion of units
2. Perimeter of Polygons
3. Area of Polygons (individual shapes)
Parallelograms, Triangles, Trapezium

4. Perimeter and area of compound shapes
with polygons
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
Do at least two from the small category
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
Name            Shape   Perimeter   Area
Square                  P=4b        A=b2
Rectangle               P=2b+2h     A=bh
=2(b+h)
Parallelogram                       A=bh

Rhombus                 P=4b        A=bh

Trapezium                           A=1/2(b1+b2)h
Example
6cm

8cm

8cm

12cm
6cm

8cm

12cm

8cm
+   -
4cm

4cm
12cm                     6cm

8cm
+                8cm   -
4cm
1

4cm                   4cm

1                          bh
A  bh               A  (b1  b2 ) h           A
2                            2
 12  8               1                          4 4
  ( 6  4)  8           
 96cm 2               2                            2
 40cm 2                    8cm 2

Total Area = 96+40-8= 128cm2

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