Geometry crossword

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Across
  1. 2. All three sides equal
  2. 3. Angles with the sum 90 degrees
  3. 5. 3 side shape
  4. 7. Horonzontial axis
  5. 9. More than 90 degrees
  6. 10. Two lines that never touch
  7. 13. Two equal sides
  8. 15. Equal
Down
  1. 1. Books have these
  2. 4. Vertical axis
  3. 6. Angle less than 90 degrees
  4. 8. Angles with the sum 180 degrees
  5. 11. Rhymes with Boston
  6. 12. angle In this kind of triangle there is a box on one of the angles
  7. 14. No sides are equal