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# SCALE DRAWING AND PATTERNS

CONTENT

1. Scale Drawing of Plane Shapes
2. Application of Scale Drawing in Solving Problems
3. Map Reading and Scale Drawing

## Scale Drawing of Plane Shapes

A scale simply means the dimension or proportion of objects in comparison to its original or actual size after the drawing. It is widely use in sciences especially in Geography, Biology, Mathematics, Physics, etc.

The scale of a drawing is determined by comparing the length of the drawing with the actual length of the object. Scale = $$\frac{\text{length of the object after drawing}}{\text{corresponding length of object before drawing}}$$

Diameter of A  = 25cm

Diameter of B = 10cm

Scale = $$\frac{10}{25} = \frac{2}{5}$$

∴ the scale is 2 to 5,  i.e  2 : 5 meaning 2cm represents 5cm.

CLASS ACTIVITY

Use measurement to find the scale of the following shapes/figures:

(a) (b) ## Application of Scale Drawing in Solving Problems

In scale drawing the materials needed are pencil, ruler and set square.

Lesson tags: JSS2 Mathematics, JSS2 Mathematics Evaluation Questions, JSS2 Mathematics Evaluation Questions Second Term, JSS2 Mathematics Objective Questions, JSS2 Mathematics Objective Questions Second Term, JSS2 Mathematics Second Term, Mathematics Lesson Notes, Mathematics Objective Questions
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