Every time Pythagorus sailed down the Nile, he saw right triangles. Today, every time we walk down the street, we should see green buildings, minimizing their carbon footprints.
![](https://math.cwelms.org/wp-content/uploads/2022/04/oligarch.jpg)
Every time Pythagorus sailed down the Nile, he saw right triangles. Today, every time we walk down the street, we should see green buildings, minimizing their carbon footprints.