Class 6 · Chapter 8
Playing with Constructions
Geometric constructions using a compass and a ruler.
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Ganita Prakash · Class 6 (2026-27)
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Detailed theory
Compass has two arms — one with point, one with pencil. Set spread to draw arcs of that radius.
Key concepts & formulas
01
**Ruler** for straight lines; **compass** for arcs and circles.
02
Congruent segments: same length; congruent circles: same radius.
03
Bisect a segment: two arcs from each end, join intersections.
04
Copy an angle using arcs of equal spread.
05
Equilateral triangle: three equal arcs from the same radius.