The vertices of an ellipse are the two points at the end of the major axis.[br][br]For a horizontal ellipse (a is larger), the vertices are [math]\left(h\pm a,k\right)[/math][br]For a vertical ellipse (b is larger), the vertices are [math]\left(h,k\pm b\right)[/math][br][br]Use the geogebra tool to see the vertices of an ellipse