Category Archives: Geometry

The Longest Day

21st June 2013 – the Summer Solstice, the longest day. Druids, and others, have gathered at Stonehenge to celebrate the day. Despite driving past Stonehenge on many occasions and, many, many years ago, climbing over the stones themselves (in those days you had un-restricted access to the monument. Today, you are kept a respectful, if […]

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Pizza!

Here’s an interesting little fact. If you had a pizza, with a radius of ‘z’ and a thickness of ‘a’ its volume would be: Pizza or, Pi times z, times z, times a (remember – we “lazy mathematicians” often leave out times signs when using algebra: F = ma actually is F = m x […]

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Angry Owl or Kissing Fish?

Angry Owl or Kissing Fish?

Take two straight lines:   and have them cross:   The opposite angles are equal:     We often show that angles are the same by marking them with a dot, and we always mark angles we’re interested in with an arc inside the angle.   But when we do that, we left with a […]

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