Crossword #10

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