Lets Maths It

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Across
  1. 2. the branch of mathematics concerned with the properties and relations of points, lines, surfaces, solids, and higher dimensional analogues.
  2. 3. when perform this action gives greater value
  3. 6. division by this remains the same
  4. 7. are the numbers which are self divisible only
Down
  1. 1. the branch of mathematics dealing with the relations of the sides and angles of triangles and with the relevant functions of any angles.
  2. 4. the part of mathematics in which letters and other general symbols are used to represent numbers and quantities in formulae and equations.
  3. 5. is the formula for basic maths