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The angles of a triangle always sum to 180 degrees.

Author:Andrea Siwik

New Resources

  • apec
  • Portions of a Sphere
  • Folding door
  • Proving Triangles Similar by Dilation
  • Untitled

Discover Resources

  • Triangle formed when two lines intersect between two paralle
  • Secant-Secant Angles
  • mouv_circ_vert3
  • Geogebracorrige
  • Smiley Project
  • Step III 2011 Q9 - Written Solution
  • Untitled

Discover Topics

  • General Quadrilateral
  • Kite
  • Rotation
  • Natural Numbers
  • Integral Calculus
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