161. Symmedian and Antiparallel

Symmedian and Antiparallel: symmedian divides antiparallels in half
URL: http://www.cut-the-knot.org/Curriculum/Geometry/SymAntiparallel.shtml - 24kb - 19 Jun 2006

162. Tangents and Diagonals in Cyclic Quadrilateral

Tangents and Diagonals in Cyclic Quadrilateral: a rephrase of La Hire's theorem
URL: http://www.cut-the-knot.org/Curriculum/Geometry/TangentsAndDiagonals.shtml - 24kb - 19 Jun 2006

163. Viviani's Theorem

Viviani's Theorem
URL: http://www.cut-the-knot.org/Curriculum/Geometry/Viviani.shtml - 24kb - 19 Jun 2006

164. Another Pair of Twins in an Arbelos

Another Pair of Twins in an Arbelos
URL: http://www.cut-the-knot.org/Curriculum/Geometry/OtherTwins.shtml - 24kb - 19 Jun 2006

165. Dividing a Segment into N parts: Besteman's Construction

Dividing a Segment into N parts: Besteman's Construction
URL: http://www.cut-the-knot.org/Curriculum/Geometry/Besteman.shtml - 24kb - 19 Jun 2006

166. -

Reflections of a Line Through the Orthocenter: reflect a line through the orthocenter of a triangle in the three side lines. The three reflections concur on the circumcircle
URL: http://www.cut-the-knot.org/Curriculum/Geometry/OrthoReflections.shtml - 24kb - 19 Jun 2006

167. Stylized demonstration of the dual of Pappus' theorem

Stylized demonstration of the dual of Pappus' theorem
URL: http://www.cut-the-knot.org/Curriculum/Geometry/PappusDual.shtml - 24kb - 19 Jun 2006

168. Radical Center

Radical Center: radical axes of three circles taken pairwise are concurrent. What else can be said?
URL: http://www.cut-the-knot.org/Curriculum/Geometry/RadicalCenter.shtml - 24kb - 19 Jun 2006

169. Three Tangents Theorem II

Three Tangents Theorem II: Gergonne point has analogues where incircle is replaced with excircles
URL: http://www.cut-the-knot.org/Curriculum/Geometry/ThreeTangents2.shtml - 24kb - 19 Jun 2006

170. Internal Tangents to Three Circles

Internal Tangents to Three Circles: if three internal tangents of three circle concur, so do the other three internal tangents
URL: http://www.cut-the-knot.org/Curriculum/Geometry/IsogonalTangents.shtml - 24kb - 19 Jun 2006

Results Pages: [ << Previous ] 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 [ Next >> ]

Search Tips - Main Page