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Sum of Interior angle measures

Author:Sheryl Hughes

Prove the Sum

Construct a triangle. Compute the sum of the interior angles.

New Resources

  • Visualizing the Pythagorean Identity with Sine and Cosine
  • Prism Drawn in 2-Point Perspective
  • Average Value of a Function
  • Untitled
  • Slope Between 2 Points (Phase 2)

Discover Resources

  • CCSS IP Math I 3.1.1 Example 1
  • reflection
  • Decomposing Proper Fractions 
  • Student t
  • General Term of an Arithmetic Sequence 等差數列的通項

Discover Topics

  • Equations
  • Complex Numbers
  • Inequalities
  • Quadrilaterals
  • Multiplication
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