Compass and straightedge
Draw lines and circles; every crossing is a point to build on. Pick an exercise, or where to start.
Exercises
- Euclid's first steps 3 exercises. Euclid's opening constructions: build and carry lengths.
- Bisectors and perpendiculars 5 exercises. Halve segments and angles; drop and raise perpendiculars.
- Angles and parallels 4 exercises. Copy an angle, draw parallels, split a segment in three.
- Polygons and circles 7 exercises. Squares, hexagons, pentagons, a clock face, and tangents.