Algebra & Functions
A mathematical statement showing two expressions are equal.
Equation
Having the same size and shape.
Congruent
The average of a data set.
Mean
A statement comparing two expressions using <, >, ≤, or ≥.
Inequality
Having the same shape but not necessarily the same size.
Similarity
The middle value in a sorted data set.
Median
A relation where each input has exactly one output.
Function
a² + b² = c² for right-angled triangles.
Pythagorean Theorem
A measure of the spread or dispersion of data.
Standard Deviation
The set of all possible input values of a function.
Domain
In a right triangle: opposite side ÷ hypotenuse.
Sine (sin)
The likelihood of an event occurring.
Probability
A function in the form f(x) = a·b^x, where b > 0.
Exponential Function
A circle of radius 1 centered at the origin used in trigonometry.
Unit Circle
A rectangular array of numbers or expressions arranged in rows and columns.
Matrix