Geometry terms

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Across
  1. 3. an angle less than 90°
  2. 5. has one starting point and goes on forever
  3. 6. the total distance around a shape
  4. 8. segment part of the line that has 2 end points
  5. 10. an angle more than 90°
  6. 12. a triangle with 2 equal sides
  7. 13. a shape with 4sides and 4 right angles
  8. 14. the total space inside a shape
  9. 15. Formed by 2 lines meet at a common point
Down
  1. 1. the distance around a circle
  2. 2. a point where 2 lines meet
  3. 4. an 90° angle
  4. 7. ratio of a circle's circumference
  5. 9. a triangle with all equal sides
  6. 11. a triangle with no equal sides