Across
- 2. What makes a shape strong?
- 4. What do engineers use to form structures?
- 7. The oldest arch known to man!
- 8. This triangle is easily visible on houses.
- 9. This triangle is often hidden under long stretches of material.
Down
- 1. a honeycomb is an example of which strong shape?
- 3. These creatures' eyes have multiple hexagons in them!
- 5. This snowy oddity is an example of a hexagon in nature.
- 6. What's a common structure that engineers build?