61. 9-point Circle as a locus of concurrency: What Is This About?

9-point Circle as a locus of concurrency: What Is This About
URL: http://www.cut-the-knot.org/Curriculum/Geometry/GriffithsSolution.shtml - 21kb - 19 Jun 2006

62. sin(N)

sin(N). Plotting sine at integer points
URL: http://www.cut-the-knot.org/Curriculum/Geometry/IntegerSine.shtml - 21kb - 19 Jun 2006

63. Conway's Circle

Conway's Circle
URL: http://www.cut-the-knot.org/Curriculum/Geometry/ConwaysCircle.shtml - 21kb - 19 Jun 2006

64. Six Circles Theorem (Evelyn)

Six Circles Theorem: a chain of circles touching successive pairs of sides of a triangle and each other
URL: http://www.cut-the-knot.org/Curriculum/Geometry/Evelyn.shtml - 22kb - 19 Jun 2006

65. 5-Star and A Circle

5-Star and A Circle
URL: http://www.cut-the-knot.org/Curriculum/Geometry/StarAndCircleSolution.shtml - 22kb - 19 Jun 2006

66. Vecten's Collinearity

The two Vecten points and the 9-point center are collinear
URL: http://www.cut-the-knot.org/Curriculum/Geometry/VectenCollinearity.shtml - 22kb - 19 Jun 2006

67. Asymmetric Propeller

Asymmetric Propeller: What is it?
URL: http://www.cut-the-knot.org/Curriculum/Geometry/AsymmetricPropeller0.shtml - 22kb - 19 Jun 2006

68. Two Squares and Another Square

Sites for teachers Sites for parents Terms of use Awards Interactive Activities CTK Exchange Games & Puzzles Arithmetic/Algebra Geometry Probability...
URL: http://www.cut-the-knot.org/Curriculum/Geometry/DirectlySimilar1.shtml - 22kb - 19 Jun 2006

69. Circle and Hyperbola As Lighthouse Curves

Circle and Hyperbola As Lighthouse Curves: what are those points that are illuminated simultaneously by beams from two lighthouses that rotate with equal angular velocities?
URL: http://www.cut-the-knot.org/Curriculum/Geometry/CircleAsLighthouseCurve.shtml - 22kb - 19 Jun 2006

70. Diametrically Opposite Points: What Is This About?

Diametrically Opposite Points: What Is This About?
URL: http://www.cut-the-knot.org/Curriculum/Geometry/CircumSimson.shtml - 22kb - 19 Jun 2006

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