2D shapes

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Across
  1. 1. a quadrilateral, a 2D flat figure that has four closed, straight sides. But it can also be categorized as rhombus, because it has four equal sides and its opposite angles are equal.
  2. 7. a round, two-dimensional shape.
  3. 8. Any five-sided polygon, the sum of whose internal angles is 540°.
  4. 9. a quadrilateral with four right angles and its opposite sides are parallel and of equal length.
Down
  1. 2. A curve resembling a squashed circle. The word is derived from the Latin word "ovus" for egg.
  2. 3. a quadrilateral that has four equal sides and four equal angles.
  3. 4. A closed curve that is well known as a figure on playings cards besides diamonds, cross and spades.
  4. 5. a geometrical shape that contains eight sides and eight angles.
  5. 6. a polygon with three edges and three vertices.