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Apps in this category may contain frequent and intense offensive language; Frequent and intense cartoon, fantasy or realistic violence: frequent and intense adult, scary and sexually suggestive subjects: as well as sexual content, nudity, tobacco, alcohol and drugs, may not be suitable for children under 17 years of age.

Circles and Equations スクリーンショット

iPad

iPhone

About Circles and Equations

A power learning aid combines Coaching Calculator, Practice and Guide to help students master finding the center and radius of a circle by completing the square.

Develop skills with the Coaching Calculator as you find the center and radius of a circle step by step,

- Taking constant term to right hand side
- Grouping x-related and y-related terms
- Completing the squares
- Writing in center-radius form

or go straight to a particular step.

Check your progress with Practice as it presents you with circle equations from simple to more difficult.

Reference the Guide as it features step-by-step examples of circle equations where the coefficient of x² is one and not equal to one.

Applications include finding the equation of a tangent line at a a given point on a circle and determining if a given point is inside a circle.