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7th Grade Math Vocabulary
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Gravity
Terms in this set (50)
Additive Inverse
The number you need to add to a given number to get a sum of 0.
Adjacent Angles
Two angles that have a common side, a common vertex and no interior points in common.
Chord
A line segment with its endpoints on a circle.
Circle
The set of all points on a flat surface that are the same distance from a fixed point.
Circumference
The distance around a circle. (Perimeter of the circle)
Complementary Angles
Two angles whose measures add up to 90°.
Compound Event
An outcome that depends on two or more other events.
Constant Term
A number that is not multiplied by a variable.
Coordinate
The number corresponding to a point on a number line or an ordered pair that corresponds to a point on a 2D coordinate system.
Cubic Unit
Unit volume is measured in.
Dependent Events
When the outcome of one event affects the probability of the other event.
Diameter
A line segment drawn through the center of a circle with both endpoints on the circle.
Equivalent Expressions
Two expressions that have the same value.
Experimental Probability
Data collected in experiments.
Frequency
The number of times something occurs within an interval or data set.
Independent Events
When the outcome of one event does not affect the probability of the other event.
Inequality
Two expressions that are not always equal to each other
Interest
An amount paid which is a percentage of an initial value.
Irrational Numbers
A number that cannot be written as a fraction.
Like Terms
Two or more terms that contain the same variable.
Markdown
The amount added to the cost price of goods to cover overhead and profit.
Markup
A reduction in price.
Multiplicative Inverse
For a nonzero number, it is the number we can multiply by to get 1.
Origin
The point where the x-axis and y-axis meet (0,0).
Percent Decrease
Extent to which something loses value.
Percent Increase
Extent to which something gains value.
Pi
The ratio of the circumference of the circle to its diameter.
Principal
Initial value.
Probability
A number that represents how likely an event is to happen.
Proportion
An equation stating two ratios/fractions are equal.
Population
The entire group of objects or individuals considered for a survey.
Quadrants
The four parts a coordinate plane is divided into.
Radius
A line segment drawn from the center of a circle to a point on the circle.
Rational Numbers
A number that can be written as a fraction.
Random Sample
A population in which each member of the subset has an equal probability of being chosen.
Ratio
Compares two quantities by division.
Ray
Part of a line that starts at one point and extends without end in one direction.
Repeating Decimal
Decimal that repeats the same sequence of digits forever from some point onward.
Sample space
The collection of all possible outcomes of an event.
Scale Drawing
Something that is enlarged or reduced by a certain amount.
Similar Figures
Figures that have the same shape but not the same size.
Simple Interest
Interest paid on the principal alone.
Supplementary Angles
Two angles that have the sum of 180°.
Surface Area
The sum of all the area(s) of the surface(s) of a 3D solid.
Tax
Added cost to some goods or services.
Terminating Decimal
A decimal that ends.
Variability
The measure of the amount of variability in a data set (spread).
Variable
A symbol used to represent one or more numbers.
Vertical Angles
Two opposite angles formed by two interesting line. Angles that sit across from each other.
Volume
A measurement of the size of a 3D region enclosed within an object.
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