Class 7 · Ganita Prakash
Unit 14 · Class 7Ganita Prakash
Constructions and Tilings
Constructing angles/triangles and exploring tilings.
Lessons
3 concepts
- 1Angle Constructions: arc from origin, then equal arc from where it crosses base. : perpendicular bisector construction. : two arcs.
- 2Triangle ConstructionsSSS: draw one side, arcs of other two lengths from each end. SAS: side, angle at endpoint, then other side.
- 3TilingsA regular polygon tiles alone iff interior angle divides 360°. Triangle , square , hexagon . Pentagon doesn't.
Skills to practise