# Conic Sections in Ireland

### By Meghan Hickey

## What is a Conic Section?

A conic section is defined as an intersection of a plane and a cone. A conic section can be a circle, an ellipse, a parabola, and a hyperbola.

## What is a Circle?

A circle is defined as a perfectly round shape: a line that is curved so that its ends meet and every point on the line is the same distance from the center. In the pictures below are examples of circle I found in my pictures from my trip to Ireland.

## The Old Church Tower in Aghagower, Ireland Here is an example of a circle looking up into an old church tower | ## Delicious dinner I had in Dingle, Ireland Here is another example of a circle, the plate is in the shape of a circle and so is the food on my plate! | ## Guinness Factory, Pour your own Guinness! On each table in the Pour your own Guinness room there was a golden circle of the Guinness sign on the table, here is another example of a circle. |

## The Old Church Tower in Aghagower, Ireland

Here is an example of a circle looking up into an old church tower

## Delicious dinner I had in Dingle, Ireland

Here is another example of a circle, the plate is in the shape of a circle and so is the food on my plate!

## What is an Ellipse?

An ellipse is defined as looking like a squashed circle or having an egg-liked shaped.

## Cousin Angela's car I circled the head lights and side mirrors because they are ellipse shaped. | ## Statue in Dublin, Ireland I circled the ellipse which is the wreath shape under the statue. | ## Barley from the Guinness Factory I am holding some barley that the Guinness factory had out to show how much they use each day to make the beer, the way I'm holding the barley my hand looks like an ellipse. |

## What is a Parabola?

A parabola is defined as a plane curve formed by the intersection of a right circular cone with a plane parallel to a generator of the cone.

## Blarney Castle The arches in the castle are shapes of a parabola. | ## The rainbow over Killarney, Ireland The rainbow is another parabola. | ## Croagh Patrick The shape of the mountain is a similar shape to a parabola. |

## What is a Hyperbola?

A hyperbola is the set of points in a plane whose distances to two fixed points in the plane have a constant difference; a curve consisting of two distinct and similar branches.

## Bridge in Dublin, Ireland I highlighted the sign that had an X through it for no parking, in the sign is a hyperbola. | ## The Guinness glass The glass shape has a hyperbola shape. | ## Hickey's Pharmacy (I am not related to the family run company) In the H is the hyperbola shape. |

## All sources used to define the conic sections:

Conic Section definition: http://math2.org/math/algebra/conics.htm

Circle definition: http://www.merriam-webster.com/dictionary/circle

Ellipse definition: http://www.mathsisfun.com/definitions/ellipse.html

Parabola definition: http://dictionary.reference.com/browse/parabola

Hyperbola definition: http://dictionary.reference.com/browse/hyperbola

The cites used for the pictures are found in the title underneath the pictures.