Quadratic
- Bézier curve
- Complex quadratic polynomial
- Cubic (disambiguation)
- Latin
- Linear
- Periodic points of complex quadratic mappings
- Quad (disambiguation)
- Quadratic (collection)
- Quadratic classifier
- Quadratic convergence
- Quadratic differential
- Quadratic equation
- Quadratic field
- Quadratic form
- Quadratic form (statistics)
- Quadratic formula
- Quadratic function
- Quadratic growth
- Quadratic integral
- Quadratic irrational
- Quadratic mean
- Quadratic probing
- Quadratic programming
- Quadratic reciprocity
- Quadratic residue
- Quadratic sieve
- Quadratic time
- Quadratic transformation (disambiguation)
- Quadratic variation
- Square (algebra)