This document discusses methods for calculating the areas of polygons. It covers two methods for calculating the area of triangles: the shoelace formula and the box method. These methods involve using coordinates, addition, subtraction and multiplication of the coordinates. Examples are provided to demonstrate calculating areas of various triangles using both the shoelace formula and box method. The document also discusses calculating the areas of quadrilaterals and other polygons by dividing them into triangles.

1. CHAPTER 7:
Coordinate Geometry
7.3 Areas of Polygons
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Prepared by: Mdm Atiqah

2. What are we going to learn?

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10. There are 2 methods that can be used
to determine area of triangle:
Boxmethod

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34. CONCLUSIONS :
There are 2 methods that can be used
to determine area of triangle:
i) Formula ‘Shoelace algorithm’
ii) Box method
1.
subtraction
addition

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37. Have we achieved our objectives for today?

38. Thank you