A plane intersects the double cone in four ways producing a circle,
an ellipse, a parabola, and an hyperbola.
![](https://i0.wp.com/chalkdustmagazine.com/wp-content/uploads/2024/04/Ashleigh.jpeg?resize=150%2C150&ssl=1)
Ashleigh is a PhD student and graduate teaching assistant at the University of Leicester. Her main mathematical interests are in number theory. She is passionate about outreach and inclusion in mathematics, volunteers as a STEM ambassador and is a representative for the Piscopia Initiative.
More from Chalkdust
Markov unchained
Ashleigh Wilcox looks for integer solutions to the Markov equationOn conditional probability: Cards, Covid, and Crazy Rich Asians
Madeleine Hall explores the sometimes counterintuitive consequences of conditional probability to our everyday lives.Chalkdust Book of the Year 2020
We announce the shortlistReview of the year 2017
What have we been up to this year?How to make: a Dear Dirichlet Valentine’s Day card
Make the perfect gift for your loved oneFor the love of puzzles
Pub ✕ maths = ?