Let's Be Rational Crossword

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Across
  1. 2. An angle that measures 90 degrees.
  2. 4. A corner of a polygon.
  3. 5. A shape formed by three or more line segments called "sides".
  4. 7. The measure of the distance around a 2-dimensional figure.
  5. 10. A pair of numbers used to locate a point on a coordinate grid.
  6. 11. A polygon that has all of its sides equal and all of its angles equal.
  7. 13. A 2-dimensional pattern that can be folded into a 3-dimensional shape.
  8. 14. A triangle with no sides equal.
  9. 15. A triangle with 2 sides the same length.
Down
  1. 1. The amount of space occupied by a 3-dimensional shape.
  2. 3. Lines that meet at right angles.
  3. 6. A 3-dimensional shape with one polygon base and lateral faces.
  4. 8. The amount of surface enclosed by the lines of a shape.
  5. 9. The area required to cover a 3-dimensional shape.
  6. 12. A 3-dimensional figure with a top and bottom that are congruent polygons.