Maths

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Across
  1. 3. - The total length of the sides of a two-dimensional shape.
  2. 4. - A four-sided polygon.
  3. 7. - A shape with no corners or edges.
  4. 8. - A two-dimensional figure with defined boundaries.
Down
  1. 1. - The point where two or more lines or edges meet in a shape.
  2. 2. - A three-sided polygon.
  3. 5. - The space between two intersecting lines or surfaces.
  4. 6. - The amount of space inside a two-dimensional shape.
  5. 8. - When one side of a shape is a mirror image of the other.
  6. 9. - A figure with three or more straight sides.