Maths

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Across
  1. 3. Another name for Square root spiral
  2. 5. When two or more figures coincide when superimposed.
  3. 7. Each of a group of numbers used to indicate the position of a point, line, or plane.
  4. 8. A property which states "a+b=b+a"
Down
  1. 1. X-coordinate.
  2. 2. A two-dimensional figure with four sides and four vertices.
  3. 3. A line that intersects two or more other lines at distinct points.
  4. 4. A four sided figure with all sides equal and all angles are right angles.
  5. 6. Angle less than 90 degrees.
  6. 9. A value denoted by a letter which can vary. Not consistent or having a fixed pattern; liable to change.