Classify the following matrices as, a row, a column, a square, a diagonal, a scalar, a unit, an upper triangular, a lower triangular, a symmetric or a skew-symmetric matrix.

$\left[\begin{array}{ccc}3& -2& 4\\ 0& 0& -5\\ 0& 0& 0\end{array}\right]$

Classify the following matrices as, a row, a column, a square, a diagonal, a scalar, a unit, an upper triangular, a lower triangular, a symmetric or a skew-symmetric matrix.

$\left[\begin{array}{ccc}0& 4& 7\\ -4& 0& -3\\ -7& 3& 0\end{array}\right]$

Classify the following matrices as, a row, a column, a square, a diagonal, a scalar, a unit, an upper triangular, a lower triangular, a symmetric or a skew-symmetric matrix.

$\left[\begin{array}{c}5\\ 4\\ -3\end{array}\right]$

Classify the following matrix as, a row, a column, a square, a diagonal, a scalar, a unit, an upper triangular, a lower triangular, a symmetric or a skew-symmetric matrix.

$\left[\begin{array}{ccc}9& \sqrt{2}& -3\end{array}\right]$

Classify the following matrix as, a row, a column, a square, a diagonal, a scalar, a unit, an upper triangular, a lower triangular, a symmetric or a skew-symmetric matrix: $\left[\begin{array}{cc}6& 0\\ 0& 6\end{array}\right]$

Classify the following matrix as, a row, a column, a square, a diagonal, a scalar, a unit, an upper triangular, a lower triangular, a symmetric or a skew-symmetric matrix: $\left[\begin{array}{ccc}3& 0& 0\\ 0& 5& 0\\ 0& 0& \frac{1}{3}\end{array}\right]$

Classify the following matrix as, a row, a column, a square, a diagonal, a scalar, a unit, an upper triangular, a lower triangular, a symmetric or a skew-symmetric matrix: $\left[\begin{array}{ccc}10& -15& 27\\ -15& 0& \sqrt{34}\\ 27& \sqrt{34}& \frac{5}{3}\end{array}\right]$

Classify the following matrix as, a row, a column, a square, a diagonal, a scalar, a unit, an upper triangular, a lower triangular, a symmetric or a skew-symmetric matrix: $\left[\begin{array}{ccc}1& 0& 0\\ 0& 1& 0\\ 0& 0& 1\end{array}\right]$

Classify the following matrix as, a row, a column, a square, a diagonal, a scalar, a unit, an upper triangular, a lower triangular, a symmetric or a skew-symmetric matrix: $\left[\begin{array}{ccc}0& 0& 1\\ 0& 1& 0\\ 1& 0& 0\end{array}\right]$