Math crossword

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Across
  1. 2. a combination of several mathematic strategies.
  2. 5. two lines at right angles divide each parts of a plane.
  3. 6. an expression for quantity in terms of mass and length to appropriate power.
  4. 8. an angular point of a polygon or a figure.
  5. 10. a quadrilateral with one pair of sides parallel.
  6. 13. movement of body from different points in the same direction and in the same distance without rotation and reflection.
  7. 14. the outside or perimeter of an object or surface.
Down
  1. 1. a straight line going side to side through a figure e.g. circle or sphere.
  2. 3. a process, which is converted into another value.
  3. 4. next to or joining something else.
  4. 7. something not even or a different shape.
  5. 9. a number multiplied by itself a certain number of times.
  6. 11. coinciding exactly when superimposed.
  7. 12. a plane figure with at least three straight sides and angles.