Shapes and geometry

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Across
  1. 3. A shape with four equal sides and four right angles.
  2. 5. A stretched-out circle shape with curved edges.
  3. 7. A perfectly round shape with no corners or edges.
  4. 8. A shape with five straight sides and five angles.
  5. 9. A shape with four sides and four right angles, where opposite sides are equal in length.
Down
  1. 1. A shape with eight straight sides and eight angles.
  2. 2. A shape with six straight sides and six angles.
  3. 3. A shape with many pointed edges, resembling a star.
  4. 4. A shape with three straight sides and three angles.
  5. 6. A four-sided shape with two pairs of parallel sides.