Euclid's Definitions and Propositions

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Across
  1. 2. base angles of an isosceles triangle are equal
  2. 3. adding any two angles in a triangle results in a sum of less than 180 degrees
  3. 5. that which has no point
  4. 7. angle bisector
  5. 8. SSS
  6. 10. sides opposite to the base angles in an isosceles triangles are equal
  7. 11. perpendicular bisector on a given point not on the line
  8. 12. breadthless length
  9. 13. vertical angles are equal
  10. 16. angles that add up to 90 degrees
  11. 17. given a straight line, construct an equilateral triangle
Down
  1. 1. when a straight line set up on a straight line makes the adjacent angles equal to one another, each of the equal angles, is right
  2. 3. angles that add up to 180 degrees
  3. 4. perpendicular bisector on a given point on the line
  4. 6. exterior angles are greater than either opposite interior angle
  5. 9. the sum of linear pairs are equal to 180 degrees
  6. 10. breadth and length only
  7. 14. perpendicular bisector
  8. 15. SAS