Monday maths madness

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Across
  1. 4. Shape with 4 sides of equal length
  2. 5. Shape with 4 right angles
  3. 6. Lines that never meet
  4. 10. Shape made of 2 pairs of parallel lines
Down
  1. 1. Greater than a right angle
  2. 2. Less than a right angle
  3. 3. Shape made of 4 straight lines
  4. 7. Shape with 1 pair of parallel lines
  5. 8. Shape made of 3 straight lines
  6. 9. _______ angle. An angle that looks like an L