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

Isosceles Right Triangle
Segment Addition Postulate (Mild Questions)
Perpendicular Lines: Quick Exploration
Odd Function Explorer
Linear Equation Graphs: Thin Slice

Discover Resources

Images for Toolkit docs
Surface Area of a Sphere
Proof Without Words
Polygons to Pi
Open Middle: Diagonal of a Rectangular Prism

Discover Topics

Rational Numbers
Calculus
Ellipse
Quadratic Equations
Variance