Across
- 1. The first artificial satellite launched into space.
- 4. The type of rock formed from cooled lava.
- 6. The economic term for a general increase in prices.
- 7. The branch of mathematics dealing with angles and triangles.
- 8. The continent where Mount Everest is located.
- 9. The chemical element essential for human bones.
Down
- 1. The capital of South Korea.
- 2. The Greek mathematician known for his theorem about right-angled triangles.
- 3. The largest desert in the world.
- 5. The number of degrees in a right angle.