Class 6 · Chapter 14
Practical Geometry
Constructions using ruler and compass — circles, line segments, angles, perpendicular bisectors.
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Detailed theory
Use only an unmarked straightedge and a compass. This restricts constructions to those derivable from basic geometry — but many important figures are constructible.
Key concepts & formulas
01
A compass is used to draw arcs and circles.
02
To bisect a segment, mark arcs from both endpoints with radius half the segment.
03
To construct a angle, use two intersecting arcs of equal radius.
04
To copy an angle, use two arcs.
05
To draw a perpendicular from a point on a line, use two arcs from that point.