Class 8 Maths – Chapter 4
Practical Geometry
NCERT Notes | Step-by-Step Construction | Exam Friendly
What is Practical Geometry?
Practical Geometry teaches us how to draw figures accurately using instruments like a ruler, compass, and protractor.
🧰 Instruments Used
- Ruler (Scale)
- Compass
- Protractor
- Pencil
📐 Constructing a Quadrilateral
To construct a quadrilateral, we need:
- Four sides
- One diagonal
- Two angles or one angle
Steps to Draw (Example)
- Draw the given base using a ruler.
- Use compass to mark given lengths.
- Join points carefully.
- Label all vertices clearly.
Common Mistakes by Students
- Wrong measurement of sides
- Using compass loosely
- Not labeling points
Exam Tip
Always draw figures neatly and darken the final figure. Construction questions carry full marks if steps are correct.
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