letters put together

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Across
  1. 2. is the measure of the amount of surface enclosed by the boundary.
  2. 4. area is the area required to cover a three dimensional shape.
  3. 6. angle is an angle that measure ninety degrees. A rectangle has four right angles.
  4. 7. is the measurement of space occupied by or the capacity of a three-dimensional shape.
  5. 9. triangle is a triangle with no sides that are equal.
  6. 10. lines are lines that meet at right angles.
  7. 13. is a three dimensional shape with one polygon base and lateral sides that are all triangles that meet at a vertex opposite the base.
  8. 14. is the measure of distance around a figure.
Down
  1. 1. is a corner of a polygon.
  2. 3. triangle is a triangle with 2 sides that are the same length.
  3. 5. is a shape formed by three or more line segments called sides.
  4. 6. polygon is a polygon that has all of its sides equal and all of its angles equal.
  5. 8. is a two dimensional pattern that can be folded into a three dimensional figure.
  6. 11. is a three dimensional shape with a top and bottom base that are congruent polygons and lateral faces that are parallelograms
  7. 12. is an ordered pair of numbers used to locate a point of a coordinate grid.