Category
page 1Theorems in plane geometry
Pythagorean theorem
relation in Euclidean geometry among the three sides of a right triangle
intercept theorem
theorem on ratios of line segments formed when 2 intersecting lines are cut by a pair of parallels
Bézout's theorem
theorem calculating the number of intersection points of two algebraic curves in terms of their degrees
Mohr–Mascheroni theorem
theorem in geometry
Barbier's theorem
theorem that every curve of constant width has perimeter π times its width
Poncelet–Steiner theorem
theorem
Pasch's theorem
theorem
Blaschke–Lebesgue theorem
Plane geometry theorem
Holditch's theorem
Hjelmslev's theorem
theorem