- explorations in euclidean geometry
- building relationships between points
- exploring the relationship between three points
- triangle inequality
- reflecting a segment across a line
- Circle as a set of equidistant points
- the equidistance of points in relation to a segment.
- equidistance in relation to two points
- exploration: equidistance and slope
- median-altitude relationship in different triangles

- constructing unique triangles
- parallel lines
- similarity