# Mr. Woo’s GeoGebra Sketches

**Note:** Java is required to run these sketches.

These sketches (Java apps) were created using GeoGebra. It is a free online application that connects geometry and algebra, and allows one to explore mathematics in a dynamic manner.

### Algebra

3 Points Determine a Parabola

### Calculus

Secant Line Approximation

Tangent Line Surfer

### Trigonometry

Distance Formula

Reference Angle

Reference Triangle

### Statistics

Histogram: Mean and Median

Math@CowPi › GeoGebra