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The sum of the angles of a quadrilateral

Author:Daniel Mentrard
Topic:Angles, Quadrilaterals

update of my 2009 file (old GUM)

New Resources

  • Circle Passing Through 3 Points
  • bewijs stelling van Pythagoras
  • Pitfalls of Disk/Washer Method
  • Reflection = 180° Rotation about a Line
  • Locus Related to Descartes' Folium

Discover Resources

  • DynamicColor
  • Multiple reflections
  • Vertical Shift
  • metaiperbole
  • Perpendicular Bisector
  • Composition of Transformations
  • MATH171_2_6_13

Discover Topics

  • Right Triangles
  • Exponent
  • Quadratic Functions
  • Real Numbers
  • Normal Distribution
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