Monday maths madness

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