Quadratic Compass

Author:Andrew Stacey

This shows the method of solving a quadratic using a ruler-and-compass construction. Drag the point "A" around on the screen to modify the quadratic and thus its roots.

New Resources

Graphs of Rational Expressions
רישום חופשי
Riemann Sums
Vertical and Oblique Asymptote
Sine and Cosine on the Unit Circle

Discover Resources

Two triangles... equal?
The Slope of a Line and the y-Intercept Equation
equilateral
สามมิติ
Barycentric and Trilinear Coordinates v2

Discover Topics

Calculus
Mathematics
Planes
Similar Triangles
Circumcircle or Circumscribed Circle