Algebra
The result of addition
Sum
A figure with three sides
Triangle
A number that has exactly two factors: 1 and itself
Prime
A triangle with two equal sides
Isosceles
The symbol used to represent an unknown number in algebra
Variable
The distance around a circle.
Circumference
The answer to a division problem.
Quotient
The longest side of a right triangle
Hypotenuse
A number less than zero.
Negative
A parallelogram with four equal sides
Rhombus