A:
- Line – parametric description, general equation, point-slope form equation
- Direction vector and normal vector of a line
- Line segment, half-line – parametric description
- Relative position of two lines
- Perpendicularity of lines
- Parallelity of lines
B:
- Distance of a point from a line
- Distance of two parallel lines
- Angle of two lines
- Triangle – medians, heights (altitudes), side perpendicular bisectors
- Line and point reflection, translation
C:
- Angles and distances – more complex problems
- Complex problems covering whole topic
