Mathemagic -2

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Across
  1. 3. Fourth even number
  2. 4. Illustration of linear regression on a data set
  3. 6. Exponents
  4. 9. Assessing the size of objects
  5. 11. Eight letter of the Greek alphabet
Down
  1. 1. Equality of one or more variables
  2. 2. Geometric form consisting of points, lines, planes etc.
  3. 5. Study of measurement of length and angles of triangles
  4. 7. Region enclosed in a two dimensional figure
  5. 8. Length and width makes this
  6. 10. Father of Geometry