Math words

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Across
  1. 7. two lines that meet at a right angle
  2. 8. Command word that means express some algebraic terms as a product of a factor and an expression
  3. 9. 4 and 9 are ( ) of 36
  4. 10. The inverse of squaring a number
  5. 13. A set of algebraic terms and numbers with mathematical operations
  6. 16. All sides of a ( ) polygon have the same length
  7. 17. a triangle that has two equal sides
Down
  1. 1. 18 and 42 are ( ) of 6
  2. 2. an angle inside a polygon formed by two sides of a polygon
  3. 3. A three digit number that gives information about the position of an object relative to the North
  4. 4. An angle that is more than 180 degrees
  5. 5. two lines that have the same gradient
  6. 6. Command word that means find the value of
  7. 10. Command word that means collecting like terms
  8. 11. a six sided polygon
  9. 12. a pair of angles that are equal when a transversal intersects a pair of parallel lines
  10. 14. Command word that means multiplying a factor and an expression to remove the brackets
  11. 15. a quadrilateral with one pair of parallel lines