Question

Which sentence uses the term “minimum” correctly?


The ruler is minimum to the desk, which means it is straight up and down at a 90-degree angle.

Five nickels are a minimum to one quarter, because they add up to the same amount of money.

A minimum angle is an angle that is less than 90 degrees.

Most people need a minimum of eight hours of sleep each night to feel rested the next day.

Answer 1

Sentence 4 is correct.

Brief notes on the others:
- Sentence 1: wrong — use "perpendicular" or "vertical" instead of "minimum."
- Sentence 2: wrong — say "Five nickels are equivalent to one quarter" or "Five nickels equal one quarter."
- Sentence 3: wrong — an angle less than 90° is called "acute"; "minimum angle" would mean the smallest angle in a given set or context.