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  1. The special case of Miquel's theorem when points are collinear | plane geometry | intermediate level

    The special case of Miquel's theorem when points are collinear | plane geometry | intermediate level

    22
  2. Brocard points of a triangle | plane geometry | intermediate level

    Brocard points of a triangle | plane geometry | intermediate level

    6
    1
  3. Challenging Mathematics Quiz

    Challenging Mathematics Quiz

    1
  4. The REVEALING Mathematics of McDonald’s

    The REVEALING Mathematics of McDonald’s

    57
  5. De Longchamps theorem about perpendicular bisectors of angle bisectors | geometry | intermediate

    De Longchamps theorem about perpendicular bisectors of angle bisectors | geometry | intermediate

    14
    1
  16. The two tangents to a circle from a point are equal to each other | plane geometry | elementary lev.

    The two tangents to a circle from a point are equal to each other | plane geometry | elementary lev.

    55
  17. The angles between sides of triangle and altitude and circumcenter | plane geometry | intermediate

    The angles between sides of triangle and altitude and circumcenter | plane geometry | intermediate

    34