An equilateral triangle and a parabola that is tangent to two of its sides in two vertices. Proof that the triangle centre coincides with the parabola focus.

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## Solution

## Poem

The pyramid of Austerlitz

Sand and earth construction

For military purposes

Symbolic pyramid

Or cubic stone

Pyramid made of fear and mystery

This geometrical figure

Can represent social ascension

Always higher

In the land of a thousand dreams

For a place in the bright sun