8th Grade Module 1 Vocabulary

Front

cube root

Back

The cube root of a number x is a number with a cube that is x. The expression represents the cube root of x.

Front

exponent of 0

Back

A power with an exponent of 0 is x^0 = 1 for any nonzero x.

Front

hypotenuse

Back

The hypotenuse of a right triangle is the side opposite the right angle. It is also the longest side of a right triangle.

Front

irrational number

Back

A number that is not rational and cannot be expressed as p/q for integer p and nonzero integer q. An irrational number has a decimal form that is neither terminating nor repeating.

Front

leg

Back

A leg of a right triangle is a side adjacent to the right angle.

Front

negative exponent

Back

For any nonzero x, and for any integer n, x^−n = 1/x^n.

Front

order of magnitude

Back

The order of magnitude n is the exponent on the power of 10 for a number written in scientific notation.

Front

perfect cube

Back

A perfect cube is the cube of an integer.

Front

perfect square

Back

A perfect square is the square of an integer.

Front

Pythagorean theorem

Back

In a right triangle, the sum of the squares of the leg lengths is equal to the square of the hypotenuse length.