Geometry

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Across
  1. 5. an informal word to describe angles of an object
  2. 6. A line is made of a set of points which is extended in opposite directions infinitely.
  3. 7. identical in size and shape
  4. 9. Surface planes of three dimensional shapes
  5. 10. line segments in geometric figures that compose the exterior of the object
  6. 11. Two lines that meet to make a corner
  7. 14. A closed Figure with eight sides
  8. 16. A closed four-sided figure with parallel opposite sides. A square is a special kind of rhombus. Sometimes called a diamond.
  9. 18. A closed figure with three sides
  10. 19. having curvy or undulating attributes
Down
  1. 1. A two-dimensional, closed, four-sided figure with four right angles.
  2. 2. A special type of rectangle that has equilateral (same length) sides and parallel opposite sides.
  3. 3. a specific position on a line
  4. 4. A two-dimensional shape in which all points on the curved line are equidistant from a center point
  5. 5. A closed figure with five sides
  6. 8. sides that are the same length
  7. 12. The meeting of two faces on a three dimensional shapes
  8. 13. two lines in a two dimensional surface upon which two dimensional objects
  9. 15. A three-dimensional figure with identical equilateral squares as faces (a cube is also a prism, see square prism below).
  10. 17. without a curve