Shapes in Geometry

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Across
  1. 4. a four-sided, or quadrilateral, geometric figure in which all four sides are of the same length and each of the two pairs of opposite sides are parallel to each other
  2. 6. a three-dimensional shape, with a polygonal base and flat triangular faces, which join at a common point called the apex
  3. 7. a solid three-dimensional figure, which has 6 square faces, 8 vertices and 12 edges
  4. 8. a closed flat shape, having four sides, and each angle equal to 90 degrees
  5. 10. a polygon with 6 sides and 6 angles
  6. 11. a three-dimensional shape in geometry that narrows smoothly from a flat base to a point called the apex or vertex
Down
  1. 1. a three-dimensional object that is round in shape, no faces, no vertices, no edges
  2. 2. a round-shaped figure that has no corners or edges
  3. 3. a three-dimensional solid that holds two parallel bases joined by a curved surface, at a fixed distance
  4. 5. a plane figure with four equal straight sides and four right angles
  5. 6. a polygon with 5 sides and 5 angles
  6. 9. a polygon with three corners and three sides