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Triangle Sum Theorem

Author:Anthony DiLaura
Prove that the 3 interior angles of a triangle add to equal 180 degrees.

New Resources

  • Pythagorean Template: Integer Legs
  • Parabolas, Lines and Nomograms
  • Slope Illustrator (2)
  • Right Triangle Inscribed in a Semicircle
  • Isosceles Right Triangle

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  • CCSS TP Algebra I 1.6.1 Example 3
  • Start, Perpendicular to line from point not on line
  • Izzi Gorowsky Transformation Project
  • Q1 - Skills Check
  • Pendulum with unrolled dial

Discover Topics

  • Ratios
  • Rhombus
  • Vectors 2D (Two-Dimensional)
  • Linear Regression
  • Limits
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