HS.G.19.a
Write the equation of a circle of given center and radius using the Pythagorean Theorem.
Example Problems
A circle has a radius of units and is centered at .
Write the equation of this circle.
Write the equation of this circle.
A circle has a radius of units and is centered at .
Write the equation of this circle.
Write the equation of this circle.
A certain circle can be represented by the following equation.
What is the center of this circle?
What is the center of this circle?
Khan Academy ResourcesCircle equation reviewGraph a circle from its standard equationGraph a circle from its expanded equationFeatures of a circle from its standard equationFeatures of a circle from its expanded equationFeatures of a circle from its graphGraph a circle from its featuresWrite standard equation of a circleIntro to conic sectionsFeatures of a circle from its graphFeatures of a circle from its expanded equationWriting standard equation of a circleGraphing a circle from its standard equationGraphing circles from featuresFeatures of a circle from its standard equation

1-on-1 AI tutoring aligned to HS.G.19.a. Instant help for students, real-time insights for teachers.
Used in classrooms by 100,000+ students at Baltimore County, Plano ISD, Deer Valley USD, KIPP, and districts nationwide.
Free for teachers, forever →