The sides of a geometrical figure, particularly a triangle, can be called either arms or legs. Arms is more commonly used.
principal(in terms of math)- the amount you borrow or deposit
HL in math mean hypotenuse leg
ask your math teacher
It
The total of an addition. Difference means minus / take away Product means multiplication Quotient means division.
A number? ^^
neither
the average
Dekagrams.
average
turning
Milimeters