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Four orthocenters lie on a circle

Author:Poliagapitos

New Resources

  • Reflection Across 2 Parallel Lines
  • Exploring GeoGebra for the First Time
  • Prism Drawn in 1-Point Perspective
  • Triangle with 3 Right Angles
  • Reflection = 180° Rotation about a Line

Discover Resources

  • Parallel Lines by Angle Copy
  • diagram3
  • Circumcenter
  • Peterson 1

Discover Topics

  • Combinatorics
  • Volume
  • Right Triangles
  • Logarithmic Functions
  • Upper and Lower Sum or Riemann Sum
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