Pre-Algebra Vocabulary Flashcards

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Questions and Answers

What is the absolute value?

The distance a number is from zero on a number line (correct)
The measure of an angle
The sum of two numbers
The highest number in a set

What is an acute angle?

An angle whose measure is more than 90 degrees
An angle whose measure is less than 90 degrees (correct)
An angle that is straight
An angle equal to 90 degrees

What defines an acute triangle?

A triangle with one right angle
A triangle with two equal sides
A triangle with three obtuse angles
A triangle with three acute angles (correct)

What is the additive identity property?

Any number or variable added to zero is that number or variable. Signup and view all the answers

Define the additive inverse.

The opposite of a number. Signup and view all the answers

What are adjacent angles?

Two angles that have the same vertex, share a common side, and do not overlap. Signup and view all the answers

What is an algebraic expression?

A math sentence that contains numbers, variables, and operations. Signup and view all the answers

What are alternate exterior angles?

Two angles that are formed by two lines and a transversal, lying outside the two lines, on opposite sides of the transversal. Signup and view all the answers

What are alternate interior angles?

Two angles that are formed by two lines and a transversal, lying between the two lines, on opposite sides of the transversal. Signup and view all the answers

What is the altitude (h) in geometry?

A line segment that is perpendicular to the base of the figure; also known as the height. Signup and view all the answers

Define the term 'angle of rotation.'

The degree measure of the angle through which the figure is rotated. Signup and view all the answers

What is meant by ascending order?

Arranged in order from least to greatest. Signup and view all the answers

What is the associative property?

(a+b) + c = a + (b+c) or (ab)c = a(bc); changing the grouping does not change their sum or product. Signup and view all the answers

What is bar notation?

In repeating decimals, the line or bar placed over the digits that repeat. Signup and view all the answers

What is the base in a power?

The number in a power that is being multiplied; the factor. Signup and view all the answers

What is the base of a triangle in geometry?

Any side of a triangle or parallelogram; the parallel sides of a trapezoid. Signup and view all the answers

What is the base (B) in 3D geometry?

Area of the base (b); the face of a solid for which it is named. Signup and view all the answers

What is a boundary in geometry?

A line or curve that separates the coordinate plane into regions. Signup and view all the answers

What is a box-and-whisker plot?

A diagram that summarizes data using median, upper quartile, lower quartile, and extreme values. Signup and view all the answers

What is the center of a circle?

The given point from which all points on a circle are the same distance. Signup and view all the answers

Define a chord in geometry.

A segment with its endpoints on the circle. Signup and view all the answers

What is a circle in geometry?

A set of points in a plane that are the same distance from a given point. Signup and view all the answers

What is a circle graph?

A graph used to show data as parts of a whole. Signup and view all the answers

What is the circumference (C) of a circle?

The distance around the circle. Signup and view all the answers

What is a coefficient in algebra?

The numerical factor in a term; the number in front of the variable. Signup and view all the answers

What is the commutative property?

a + b = b + a and ab = ba; changing the order does not change the sum or product. Signup and view all the answers

Define complementary angles.

Two angles whose sum measures 90 degrees. Signup and view all the answers

What are complex figures?

Figures made up of two or more shapes. Signup and view all the answers

What is a cone?

A solid with one circular base and a curved surface that connects the base to the vertex. Signup and view all the answers

What does congruent mean?

Having the same measure. Signup and view all the answers

Define congruent polygons.

Polygons with the same size and shape. Signup and view all the answers

What is a constant in mathematics?

A number without a variable. Signup and view all the answers

What is a coordinate plane?

A plane in which a horizontal number line and a vertical number line intersect at their zero points. Signup and view all the answers

What is a coordinate system?

The grid formed by the intersection of two number lines. Signup and view all the answers

What are corresponding angles?

Angles that are in the same position on different lines. Signup and view all the answers

What are corresponding parts?

The parts of similar polygons that 'match up'. Signup and view all the answers

What are cross products?

Found by multiplying the denominator of each ratio by the numerator of the other ratio. Signup and view all the answers

What is a cube root?

One of the three identical factors of a number. Signup and view all the answers

What is a cylinder?

A solid whose bases are congruent, parallel circles connected with a curved surface. Signup and view all the answers

What is data in statistics?

Numerical information gathered for statistical purposes. Signup and view all the answers

What is a dependent variable?

The variable whose value depends on the value of x. Signup and view all the answers

What is descending order?

Arranged in order from greatest to least. Signup and view all the answers

What is the diameter (d) of a circle?

The distance across the circle through the center. Signup and view all the answers

What is dilation in geometry?

A figure is enlarged or reduced. Signup and view all the answers

What is a discount?

The amount by which the regular price is reduced. Signup and view all the answers

What is the distributive property?

a(b + c) = ab + ac; a number outside the parenthesis can be multiplied to each term within the parenthesis. Signup and view all the answers

What is the domain in functions?

The set of first numbers in an ordered pair. Signup and view all the answers

What is an edge in geometry?

Intersection of faces (the lines). Signup and view all the answers

What is an equation?

A math sentence that states two quantities are equal using an equal sign. Signup and view all the answers

What defines an equilateral triangle?

A triangle with all sides congruent. Signup and view all the answers

What are equivalent expressions?

Expressions that have the same value no matter the value of the variable. Signup and view all the answers

What does it mean to evaluate an expression?

To find the value of an expression by replacing the variable with a number. Signup and view all the answers

What is an exponent?

A number that tells how many times the base is used as a factor. Signup and view all the answers

What does the term 'face' refer to in geometry?

Flat surfaces. Signup and view all the answers

What is a family of graphs?

Graphs and equations of graphs that have at least one characteristic in common. Signup and view all the answers

What is a formula in mathematics?

An equation that states a rule for the relationship between certain quantities. Signup and view all the answers

What is frequency in statistics?

How often a piece of data occurs. Signup and view all the answers

What is a function?

A relationship where one variable depends upon another. Signup and view all the answers

What is a function table?

Table organizing the input, rule, and the output of a function. Signup and view all the answers

What is a graph in mathematics?

Visual representations of data. Signup and view all the answers

What is a half-plane in graphing?

The region of the graph of an inequality on one side of a boundary. Signup and view all the answers

What is the hypotenuse of a right triangle?

The longest side of a right triangle which is opposite the right angle. Signup and view all the answers

What is an image in transformation?

The position of the figure after the transformation. Signup and view all the answers

What is an independent variable?

The variable whose value determines the value of the other variable; the value you choose. Signup and view all the answers

Define indirect measurement.

A technique that uses proportions to find a measurement. Signup and view all the answers

What is an inequality?

An open sentence that compares two quantities using less than, greater than, less than or equal to, greater than or equal to. Signup and view all the answers

What is an integer?

A positive or negative number, including zero, that does not contain a fraction or decimal. Signup and view all the answers

What is interest in finance?

The amount of money paid or earned for the use of money. Signup and view all the answers

What is the interquartile range?

The difference between the upper quartile and the lower quartile (UQ - LQ). Signup and view all the answers

What is an inverse operation?

An operation performed to 'undo' another operation; the opposite operation. Signup and view all the answers

What is an irrational number?

A number that cannot be expressed as a fraction. Signup and view all the answers

What is an isosceles triangle?

A triangle with at least two congruent sides. Signup and view all the answers

What is lateral area?

The sum of the areas of the lateral faces or the area of the curved surface of a cone. Signup and view all the answers

What are lateral faces?

The triangular sides of a pyramid. Signup and view all the answers

What are legs in a right triangle?

The sides that form the right angle. Signup and view all the answers

What are like terms in algebra?

Terms that have the same variable raised to the same power. Signup and view all the answers

What is a line graph?

A graph used to show change in data over time. Signup and view all the answers

What is a line of best fit?

A line drawn on a scatter plot to show the correlation between two sets of values. Signup and view all the answers

What is a line of symmetry?

The fold line in symmetry. Signup and view all the answers

What is line symmetry?

A figure can be folded over a line so that one half of the figure matches the other half. Signup and view all the answers

What is a linear function?

The graph of the solutions forms a straight line. Signup and view all the answers

What is the lower quartile (LQ)?

The median of the lower half of the set of data. Signup and view all the answers

What is markup?

The amount the price of an item is increased above the price the store is paid for the item. Signup and view all the answers

What is the mean in statistics?

The sum of all the data divided by the number of pieces of data; average. Signup and view all the answers

What are measures of central tendency?

Numbers or pieces of data that can represent the whole set of data. Signup and view all the answers

What are measures of variation?

Numbers used to describe the distribution of data. Signup and view all the answers

What is the median in a data set?

The middle of the data, or the mean of the two middle numbers. Signup and view all the answers

What are misleading graphs?

Graphs that are constructed incorrectly to cause confusion and can lead to false assumptions. Signup and view all the answers

What is the mode in a data set?

The number or numbers that occur the most often. Signup and view all the answers

What is the multiplicative identity property?

Any number or variable multiplied by one is that number or variable. Signup and view all the answers

What is the multiplicative inverse property?

The product of a number and its reciprocal always equals one. Signup and view all the answers

What is a multi-step equation?

Equations with more than one operation. Signup and view all the answers

What are natural numbers?

Counting numbers or all positive whole numbers beginning with 1. Signup and view all the answers

What is a negative correlation?

In a scatter plot, as x-values increase, y-values decrease. Signup and view all the answers

What is a negative exponent?

Any nonzero number to the negative power is one divided by the number to the nth power. Signup and view all the answers

What does no correlation mean?

In a scatter plot, x-values and y-values are not related. Signup and view all the answers

What is a nonlinear function?

A function that does not have a constant rate of change; therefore, the graph is not a straight line. Signup and view all the answers

What is a numerical expression?

A math sentence that contains numbers and operations. Signup and view all the answers

What is an obtuse angle?

An angle whose measure is between 90 degrees and 180 degrees. Signup and view all the answers

Flashcards

Absolute Value

The distance a number is from zero on a number line.

Acute Angle

An angle measuring less than 90 degrees.