41. When a Triangle is Equilateral

When a Triangle is Equilateral: a criterion in complex numbers
URL: http://www.cut-the-knot.org/Curriculum/Geometry/Connes.shtml - 23kb - 19 Jun 2006

42. The altitudes and the Euler Line

Existence of the orthocenter via the circular coordinates, with Euler line popping up as a bonus
URL: http://www.cut-the-knot.org/triangle/altEuler.shtml - 29kb - 19 Jun 2006

43. An Anticomplementary Triangle Surprise

An Anticomplementary Triangle Surprise: two step Napoleon's triangle construction yields the anticomplementary triangle
URL: http://www.cut-the-knot.org/Curriculum/Geometry/AnticomplementaryTriangleSolution.shtml - 24kb - 19 Jun 2006

44. Equilateral Triangles On Sides of a Parallelogram

Equilateral Triangles On Sides of a Parallelogram: two step Napoleon's triangle construction convert between two parallelograms
URL: http://www.cut-the-knot.org/Curriculum/Geometry/EquiTriOnPara.shtml - 24kb - 19 Jun 2006

Results Pages: [ << Previous ] 1 2 3 4 5

Search Tips - Main Page