# Ellipse Introduction

- Author:
- David

- Topic:
- Ellipse

## Equation and Vocab

The standard equation of an ellipse is
You can see this is more involved than the circle formula, but it is related.
Ellipse Rules:
An ellipse is "horizontal" if the value of "a" is larger
An ellipse is "vertical" if the value of "b" is larger
Use the app to see how the formula changes