Hunor's crossword

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Across
  1. 1. A number that is being multiplied by a variable.
  2. 3. Accurate drawings of shapes, angles and lines in geometry.
  3. 5. The process of turning from liquid into vapour.
  4. 7. State of a body that moves freely in any manner in the presence of gravity.
  5. 11. An equation which is true for all values of the variable.
  6. 12. The leftover number in a division problem.
  7. 14. A quantity that can be changed and is not fixed.
  8. 15. The point of intersection of all the three medians.
  9. 16. The number of times a number needs to be multiplied by itself.
  10. 17. The distance around the edge of a shape.
Down
  1. 2. A polygon with at least one interior angle greater than 180°.
  2. 3. Two shapes are ... if they have the same shape. and size.
  3. 4. A line that connects two vertices of a polygon.
  4. 6. a point on a polygon where the sides of the object meet.
  5. 8. The path followed by an object moving under the action of given forces.
  6. 9. The longest side of a right-angled triangle.
  7. 10. The intersection point of the altitudes drawn from the vertices of the triangle to the opposite sides.
  8. 13. A number that divides another number, leaving no remainder.