What is the standard equation of a circle? Precalculus Polar Equations of Conic Sections Writing Polar Equations for Conic Sections 1 Answer AJ Speller Sep 28, 2014 Standard equation for a circle #(x-h)^2+(y-k)^2=r^2# where #(h,k)# is the center of the circle where #r# is the radius of the circle Answer link Related questions How do you identify conic sections? What is the meaning of conic section? What is the standard equation of a parabola? What is the standard equation of a hyperbola? Which conic section has the polar equation #r=1/(1-cosq)#? Which conic section has the polar equation #r=2/(3-cosq)#? Which conic section has the polar equation #r=a sintheta#? How do you find a polar equation for the circle with rectangular equation #x^2+y^2=25#? What are the polar coordinates of #(x-1)^2-(y+5)^2=-24#? How do you write the polar equations for # x = -3#? See all questions in Writing Polar Equations for Conic Sections Impact of this question 5820 views around the world You can reuse this answer Creative Commons License