Ranges
- Anharmonic Ratio
- Anharmonic Section
- Between
- Bivalent Range
- Cross Ratio
- Cross-Ratio
- Discrepancy Theorem
- Equicross
- Euler's Distribution Theorem
- Geometric Form
- Harmonic Conjugate
- Harmonic Range
- Homographic
- Interval
- Interval Arithmetic
- Line Involution
- Line Segment Range
- Pappus's Harmonic Theorem
- Perspectivity
- Pisot Number
- Pisot-Vijayaraghavan Constant
- Salem Constants
- Unit Interval