Greater than 0
less
less than
Negative a is greater than, equal to or less than 0 depending on whether a, itself, is less than, equal to or greater than 0.
NO, -16 is less than 0 and 0 is less than 5
10
It is an acute angle that is greater than 0 but less than 90 degrees
8
An acute angle is greater than 0 but less than 90 degrees
It is less than 0. That is what the minus sign, "-", means!
-12 is less than 0
5 is greater than 0,but -5 is lesser than 0