Geometry Crossword Puzzle

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Across
  1. 2. A three-dimensional geometric shape that tapers smoothly from a flat base to a point called the apex or vertex
  2. 3. A quadrilateral whose four sides all have the same length.
  3. 6. A shape consisting of all points in a plane that are at a given distance from a given point, the centre.
  4. 8. A quadrilateral with four right angles.
  5. 9. A four-sided polygon, having four edges and four corners.
  6. 12. A three-dimensional solid, one of the most basic of curvilinear geometric shapes.
  7. 13. An infinitely long object with no width, depth, or curvature
  8. 14. The measure of a region's size on a surface.
Down
  1. 1. A quadrilateral that has at least one pair of parallel sides
  2. 2. The perimeter of a circle or ellipse.
  3. 4. A regular quadrilateral, which means that it has four equal sides and four equal angles.
  4. 5. A circle is any straight line segment that passes through the center of the circle
  5. 7. A simple quadrilateral with two pairs of parallel sides
  6. 10. An angle is the figure formed by two rays,
  7. 11. A polygon with three edges and three vertices.