CROSS-WORD

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Across
  1. 1. A square matrix that, when multiplied by its inverse, results in the identity matrix
  2. 4. The determinant of a 2x2 matrix
  3. 5. A matrix in which the number of rows is equal to the number of columns
  4. 6. A square matrix with 1's on the main diagonal and 0's elsewhere
  5. 8. A matrix whose determinant is zero
  6. 9. A rectangular array of numbers
  7. 10. Matrix formed by multiplying each element of one row by a scalar and adding to another row
  8. 11. Matrix with only one row
  9. 12. A matrix formed by the cofactors of a given matrix
Down
  1. 2. A matrix whose determinant is not zero
  2. 3. Matrix obtained by exchanging rows and columns
  3. 5. The product of a scalar and a matrix
  4. 7. A matrix that is symmetric about the main diagonal