Geometry

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Across
  1. 2. A line or geodesic is considered what in Euclidean Geometry?
  2. 4. What has the definition that which has no part?
  3. 6. What are axioms that were common to all of the sciences?
  4. 8. How is a plane defined in spherical geometry?
  5. 9. What is another name for Euclid?
  6. 10. When did Euclid live?
  7. 11. Euclid proves how many propositions in Book 1?
Down
  1. 1. What is the common name for proposition 47 for Euclid's elements?
  2. 3. What is “the rules of proofs”?
  3. 5. What are the axioms that were specific to geometry?
  4. 7. In hyperbolic geometry,the angle sum of a triangle _ _ _ _ _ _ _ _, 180 degrees