📜 Theorem, law or theory

Mohr–Mascheroni theorem

Teorema de Mohr-Mascheroni

Date
1672 (Mohr) / 1797 (Mascheroni) · confidence medium
Place
Copenhagen, Denmark
Credited to
Lorenzo Mascheroni y Jørgen Mohr
Field
Knowledge & symbols

What was discovered

Euclidean geometry theorem proving that any construction possible with compass and straightedge can be achieved with compass alone, discovered independently by Georg Mohr and, later, Lorenzo Mascheroni.

What it led to

  • Renewed interest in restricted geometric constructions
  • Basis for later studies of single-instrument constructions (Poncelet-Steiner theorem)
  • Contributions to classical constructive geometry
  • Rediscovery of Mohr's nearly forgotten work in 1928

Links

Sources✓ verified 2026-09-28