There are no perfect rhymes for the word hypotenuse.
the plural is hypotenuses - per MSN Encarta, Collins English Dictionary, Macmillan Dictionary, and Math Forum
The word crises is a plural word; it is the plural form of the word crisis.
There is no plural word for if.
is the word are singular or plural
the plural word is comedones
word is singularwords is plural
A non-plural word, a word (noun or pronoun) that is not plural is singular, a word for just one.
No it's a singular word. A plural word would be "have".
The plural word for Frost is Frosts.
A hypotenuse is the long side of a right-angled triangle. A good way to remember it , is the word hypotenuse is long and it means the long side of a right-angled triangle.
There is no plural form for the word, countries. This word itself is a plural.