Geometric constructions
Straightedge-and-compass work on a grid: bisectors, equal divisions, parallels, squares, and the parabola by the rectangle method. Draw your construction lines, and the marker grades the result.
- Perpendicular bisector of a lineconstruction01
- Perpendicular bisector of a sloping lineconstruction02
- Bisect a right angleconstruction03
- Divide a line into five equal partsconstruction04
- Drop a perpendicular from a point to a lineconstruction05
- Draw a parallel through a given pointconstruction06
- Construct a square on a given sideconstruction07
- Parabola by the rectangle methodconstruction08
- Parabola by the rectangle method (fewer divisions)construction09
- Parabola by the rectangle method (more divisions)construction10