You are using a piece of string and two tacks to draw ellipses on a piece of paper. How can you draw two ellipses with the same semi- major axes but different eccentricities? How can you draw two ellipses with the same eccentricity but with the semi- major axis of one double the other?

Question

Quizplus · Accepted Answer

The Answer of You are using a piece of string and two tacks to draw ellipses on a piece of paper. How can you draw two ellipses with the same semi- major axes but different eccentricities? How can you draw two ellipses with the same eccentricity but with the semi- major axis of one double the other?

You Are Using a Piece of String and Two Tacks