Internal angle sum of triangles

Author:mrsK

- Drag the vertices A, B, C to create different types of triangles. - Use the sliders to create copies of the same triangle and prove that the internal angles always add up to 180 degrees.

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Pathway to Proof: Triangle Angles
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Untitled
Slope Between 2 Points (Phase 2)
Rose Curve

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parabola
Konstruksjon av firkant
title
Nathan Sanchez's equilateral triangle
Racines et puissances d'un nombre complexe
G.GCO.1 Proving Segments Congruent (Exercise)

Discover Topics

Arithmetic
Multiplication
Trigonometry
Incircle or Inscribed Circle
Centroid or Barycenter