The features of a circle

2 videos
2 skills
Learn about the graphs of circles, and how their center and radius are represented algebraically.

Graphing circles from features

VIDEO 2:09 minutes
Sal graphs a circle centered at (3,-2) with a radius of 5 units in our interactive widget.

Graph a circle from its features

PRACTICE PROBLEMS
Given information about the center and radius of a circle, graph it.

Features of a circle from its graph

VIDEO 3:50 minutes
Given a circle on the coordinate plane, Sal finds its center and its radius.

Features of a circle from its graph

PRACTICE PROBLEMS
Given the graph of a circle, find its center and radius.