Across
- 3. The transfer of hot air from fires to empty spaces. ___ heating.
- 4. The most famous Greek doctor.
- 7. Plato invented this by using a water clog to trigger sound. It also wakes people up.
Down
- 1. He studied geometry and is know for a theory we use today.
- 2. They came up with theories on how the world worked.
- 5. This mathematician circles, lines and triangles.
- 6. He wrote several books about geometry.
- 7. The Greeks loved to study the world ______ them.