It covers:
• Use of ruler and compass
• Drawing circles and curves
• Radius and centre of a circle
• Artistic constructions
• Constructing squares and rectangles
• Properties of rectangles and squares
• Rotated squares and rectangles
• Diagonals of rectangles and squares
• Constructing figures using diagonals
• Constructing rectangles using side and diagonal
• Points equidistant from two points
• Using arcs and circles in constructions
• Symmetry in geometric figures
• Creative geometric patterns and artwork
The chapter includes many interesting activities involving houses, eyes, waves, falling squares, shaded figures, circles, and geometric art to help students understand constructions practically and visually.
Overall, this chapter develops creativity, logical thinking, spatial understanding, accuracy in drawing, visualization skills, and practical geometry construction skills.
🔑 Key Points
• Compass – Instrument used to draw circles and arcs.
• Circle – Set of points at equal distance from a fixed point.
• Centre – Fixed point of a circle.
• Radius – Distance from centre to any point on the circle.
• Arc – Part of a circle.
• Curve – Smooth bending line.
• Rectangle – Figure with opposite sides equal and all angles 90°.
• Square – Figure with all sides equal and all angles 90°.
• Opposite Sides – Sides facing each other in a rectangle.
• Rotated Square – A square remains a square even after rotation.
• Rotated Rectangle – A rectangle remains a rectangle after rotation.
• Diagonal – Line joining opposite corners of a figure.
• Perpendicular Lines – Lines meeting at 90°.
• Construction – Accurate geometric drawing using instruments.
• Symmetry – Balanced arrangement of shapes.
• Equidistant Points – Points at equal distance from given points.
• Circle Construction – Done using compass and radius.
• Arc Construction – Drawing only a portion of a circle.
• Rough Diagram – Helps in planning constructions.
• Compass Transfer – Technique to transfer equal lengths.
👉 👉Geometric constructions teach patience, precision, creativity, and logical thinking. Using simple tools like a ruler and compass, complex and beautiful patterns can be created accurately.