Properties of shapes

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Across
  1. 4. angle A perpendicular angle
  2. 5. A triangle with all sides the same
  3. 6. This triangle has no sides the same
  4. 9. A diamond shape
  5. 10. A 3 sided shape
  6. 12. A line connecting 2 corners
Down
  1. 1. Like a triangle with a flat top
  2. 2. Two straight lines that will never meet
  3. 3. A line at right angles to another line
  4. 7. A 4 sided shape
  5. 8. A triangle with 2 equal sides and 2 equal angles
  6. 11. any 2d closed shape