dimensions of a matrix

The i,agge above is a matrix. The dimensions of this matrix is 3X3. this is also a square matrix. A square matrix is a matrix whose dimensions contain the same number, such as 3x3, 4x4, or 6x6. '

This matrix is an idenity matrix. When you multiply an inverse matrix by the idenity matrix the resulting answer will be zero. A way to recongize and idenity matxis is by the 1's crossing the matrix on the diaongal.

some more examples of matries dimensions are shown below:

 The dimmensions of this matrix is 3x2.