The ratio of the height to the width of a rectangle is the ASPECT RATIO of the rectangle.
A true equation is said to be BALANCED because both sides are equal. It remains balanced if the same numbers or variables are added to, subtracted from, multiplied by, or divided into both sides.
Two angles whose sum is 90í are called COMPLIMENTARY ANGLES.
The CROSS-PRODUCTS ad and bc are derived from the proportion a/b = c/d by ╥cross multiplication.╙ For any proportion, the cross-products are equal.
A DEGREE is a unit of measure of an angle.
If two equations have exactly the same solutions, they are EQUIVALENT EQUATIONS.
A natural number EXPONENT is a number that indicates how many times a base is used as a factor.
An algebraic EXPRESSION is a collection of numbers, variables, symbols for operations, and symbols for grouping (such as parentheses).
A FRACTION is the quotient of two quantities, written with a ╥fraction bar╙ (either a slash symbol or a horizontal bar) between the quantities.
A GOLDEN RECTANGLE is a rectangle whose aspect ratio is equal to the golden ratio, 1:1.618 . This rectangle is said to be most pleasing to the eye.
INVERSE OPERATIONS are operations that ╥undo╙ the action of each other. Addition and subtraction, and multiplication and division, are inverse operations.
Terms with exactly the same variables that have the same exponents are LIKE TERMS.
A LINEAR EQUATION can be written in the form ax + b = 0, for real numbers a and b, with a¡0.
A LINEAR INEQUALITY is an inequality that can be written in the form ax + b < 0, for real numbers a and b, with a¡0 (>, ▓, and │ may also occur).
The numerical factor in a term is its NUMERICAL COEFFICIENT.
The OPERATIONS of arithmetic are addition, subtraction, multiplication, and division. Operations combine two numbers to give a third (the sum, difference, product, and quotient respectively).
The distance around a geometric figure is called its PERIMETER.
A PROPORTION is a statement that two ratios are equal.
A RATIO is a quotient of two quantities.
SIMPLIFY an expression by using the distributive law to remove all grouping symbols (parentheses, brackets, or braces). Simplification is usually followed by collecting (adding up) like terms.
A SOLUTION of an equation is any replacement for the variable that makes the equation true.
An angle that measures 180í is called a STRAIGHT ANGLE.
Two angles whose sum is 180í are called SUPPLEMENTARY ANGLES.
A TERM is a number, a variable, or a product or quotient of numbers and variables raised to powers.
A VARIABLE is a symbol, usually a letter, such as x, y, or z, used to represent any unknown number.
VERTICAL ANGLES are formed by intersecting lines, and they have the same measures.
