Question

Be Specific: How are circles and ellipses related?

Answer 1

@goformit100 @ganeshie8

Answer 2

both are conic sections

Answer 3

since we know they are conic sections we cal list a few other similar properties

Answer 4

another way to look at is,

scaling a circle nonuniformly gives you an ellipse :
x->(x/a)
y->(y/b)

Answer 5

http://www.sparknotes.com/math/precalc/conicsections/section3.rhtml