Working with Triangles

What makes a triangle equilateral, isosceles, or scalene?

How are these triangles the same? How are they different? Manipulate the triangles by dragging their blue corner points. What happens to their side lengths?

New Resources

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Linear Systems + Relationships Between Coefficients and Solutions
Area Between Two Curves
Visualizing the Pythagorean Identity with Sine and Cosine
Tetrahedron String Art

Discover Resources

Chain with Three Links
Doc 1
Equilateral & Isosceles Triangle
Mandala

Discover Topics

Hyperbola
Quadrilaterals
Symmetry
Tangent Function
Secant Line or Secant