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CLASS: JS TWO
TOPIC: ENLARGEMENT AND REDUCTION OF PLANE FIGURES
SUB-TOPICS:
Content Development (NOTES FOR FIRST LESSON/PERIOD ONE)
Sub-Topic I: Enlargement/Reduction of plane figures
An object is enlarged when all of its dimensions are changed in the same ratio. Thus, enlargement is also called transformation. Each length of the objects is multiplied by the same number called scale factor to obtain the enlargement.
When the scale factor is less than one, the original objects is reduced.
I.e. Scale Factor = length of enlargement/corresponding length.
Examples of enlargement/reduction of plane shapes include:
ENLARGEMENT
i) Drawing a triangle which is twice the size of the original triangle
Procedure;
ii) Drawing a square which is twice the size of the original square
Procedure;
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