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  1. 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.

    54
  2. Cyclic quadrilaterals (= inscribed quadrilaterals) | plane geometry | elementary level

    Cyclic quadrilaterals (= inscribed quadrilaterals) | plane geometry | elementary level

    14
  3. The sum of angles of a triangle | plane geometry | elementary level

    The sum of angles of a triangle | plane geometry | elementary level

    42
    1
  4. A median in a right triangle | plane geometry | elementary level

    A median in a right triangle | plane geometry | elementary level

    4
  5. The circumcenter of a triangle | plane geometry | elementary level

    The circumcenter of a triangle | plane geometry | elementary level

    29
  7. The orthocenter of a triangle | plane geometry | elementary level

    The orthocenter of a triangle | plane geometry | elementary level

    25
  9. Tangential quadrilaterals, the sums of opposite sides, Pitot's theorem | plane geometry | elementary

    Tangential quadrilaterals, the sums of opposite sides, Pitot's theorem | plane geometry | elementary

    35
  11. A Free Energy Generator That's Actually a One-Piece Faraday Powerhouse

    A Free Energy Generator That's Actually a One-Piece Faraday Powerhouse

    18
    0
    1.27K
    4