Let's help to clear things up then.
Parenthesis look like this:
Curly braces look like this:
Square brackets look like this:
When you have one parenthesis mark, such as a left, or opening, parenthesis,
The matching one for that is a right, or closing, parenthesis,
Each left must be matched with a matching right one of the same type.
An opening curly brace looks like this:
And its matching closing one looks like this: