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The angles of a triangle always sum to 180 degrees.

Author:Andrea Siwik

New Resources

  • Reflection Across 2 Parallel Lines
  • רישום חופשי
  • Exploring GeoGebra for the First Time
  • גיליון אלקטרוני להעלאת נתוני בעיה ויצירת גרף בהתאם
  • Equation of Locus - Parabola

Discover Resources

  • Blackbody Spectrum versus Temperature
  • Find the least squares line
  • Pappus' theorem for parallel lines
  • Copying a angel
  • Pursuit curves on cube

Discover Topics

  • Geometric Transformations
  • Calculus
  • Derivative
  • Means
  • Terms
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