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 8782 views around the world You can reuse this answer Creative Commons License