Mateus created a matrix using the elements below.a11=32a12=10a13=-9a21=5a22=7.5a23=4a31=-0.5a32=6a33=16What type of matrix did Mateus create?a diagonal matrixa square matrixa zero matrixan identity matrix

Mateus created in this case a matrix of
 3 rows
 3 columns
 as the number of rows and columns are equal, then by definition we created a square matrix
 answer
 a square matrix