Geometry

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Across
  1. 3. Middle point on a line
  2. 4. Divide into 2 equal parts
  3. 8. Having two halves that are not the same
  4. 12. 1 pair of parallel sides
  5. 14. meeting a line to form right angles
  6. 15. Trapezoid with consecutive right angles
  7. 16. 2 pairs of equal sides
  8. 17. 2 pairs of parallel sides
  9. 18. 4 right angles & 4 equal sides
  10. 19. a^2 + b^2 = c^2.
  11. 20. 4 equal sides
Down
  1. 1. Two identical mirror halves
  2. 2. Ratio of corresponding sides
  3. 5. Trapezoid with equal base angles
  4. 6. Distance of an exterior 2D shape
  5. 7. 4 right angles & two sets of equal sides
  6. 9. Transformation maintaining shape but has different scale factor
  7. 10. Units to fill a region on 2D shape
  8. 11. 3.14
  9. 13. One corner to another not on edge