`is_square()`

checks if a matrix is square.`is_symmetric()`

checks if a matrix is symmetric.

```
is_square(x)
is_symmetric(x)
```

- x
A

`matrix`

to be tested.

A `logical`

scalar.

Other predicates:
`predicate-graph`

,
`predicate-numeric`

,
`predicate-scalar`

,
`predicate-trend`

,
`predicate-type`

,
`predicate-utils`