L01

Anton Petrunin, 2025/02/08


  • 1. Bisected perpendicular 1
  • 2. Tangent circle 1
  • 3. Side-median-side
  • 4. Incircle
  • 5. Tangent circle 3
  • 6. Bisected line
  • 7. Tangent line 1
  • 8. Perpendicular 1
  • 9. Minimal perimeter 1
  • 10. Circumcircle
  • 11. Tangent circle 2

1.

Bisected perpendicular 1

Construct a line n such that n ⊥ l and l besects the segment on n between k and m.
Hint:
Try to use reflection across line l.
– Anton Petrunin

2.

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3.

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4.

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9.

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