What is meant by an ellipse in standard form? Precalculus Geometry of an Ellipse Standard Form of the Equation 1 Answer Massimiliano Mar 2, 2015 The standard form of the ellipse, centered in the point #C(x_C,y_C)# and with the semi-axes #a#, horizontal and #b#, vertical is: #(x-x_C)^2/a^2+(y-y_C)^2/b^2=1#. Answer link Related questions What are common mistakes students make with ellipses in standard form? How do I write an ellipse in standard form? How do I find the center of an ellipse in standard form? What is the major axis of an ellipse? How do I find the major and minor axes of an ellipse? How do I know whether the major axis of an ellipse is horizontal or vertical? How do I find the center of an ellipse with the equation #9x^2+16y^2-18x+64y=71#? How do I use completing the square to rewrite the equation of an ellipse in standard form? What do #a# and #b# represent in the standard form of the equation for an ellipse? What is the center of the ellipse represented by #(x-6)^2/36+(y+4)^2/16=1#? See all questions in Standard Form of the Equation Impact of this question 8525 views around the world You can reuse this answer Creative Commons License