## PSSA Math Terms

##### Created by:

MsAre  on March 22, 2010

##### Description:

Terms you need to know for the Math Vocabulary Test on March 31, 2010.

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# PSSA Math Terms

 PrismA three-dimensional solid that has two congruent and parallel faces that are polygons. The remaining faces are rectangles. Prisms are named by their bases.
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#### Definitions

Prism A three-dimensional solid that has two congruent and parallel faces that are polygons. The remaining faces are rectangles. Prisms are named by their bases.
Expression A variable, or any combination of numbers, variables, and symbols that represents a mathematical relationship (e.g., 24 x 2 + 5 or 4a - 9)
Acute Triangle A triangle that has each angle measuring less than 90 degrees.
Quadrants The four regions of a coordinate plane that are separated by the axes.
Function A relation in which every input value has a unique output value.
Adjacent Angles Angles that share a common side and common vertex and do not overlap.
Range The difference between the greatest and least numbers in a set of data.
Hypotenuse The longest side of a right triangle (which is also the side opposite the right angle).
Area The measure, in square units, of the inside of a plane figure.
Rate A ratio that compares two quantities having different units (e.g., 95 miles in 2 hours).
Inequality A mathematical sentence that contains a symbol that shows the terms on either side of the symbol are unequal (e.g. 3 + 4 > 6).
Box-and-Whisker Plot A graphic method for showing a summary of data using median, quartiles, and extremes of data.
Surface Area The sum of the areas of all of the faces of a three-dimensional figure.
Leg Either of the two sides that form the right angle in a right triangle.
Complementary Angles Two angles whose measures, when added together, equal 90 degrees.
Congruent Having the same size and shape.
Mean The number found by dividing the sum of a set of numbers by the number of addends.
Unit Price The price of a single item or amount (e.g., \$3.50 per pound).
Median The middle number in an ordered set of data, or the average of the two middle numbers when the set has two middle numbers.
Cylinder A three-dimensional figure with two circular bases, which are parallel and congruent.
Net A two-dimensional shape that can be folded to create a three-dimensional figure.
Mode The number(s) that occurs most often in a set of data.
Volume The amount of space (in cubic units) that a solid figure can hold.
Ordered Pair A pair of numbers used to locate a point on a coordinate grid. The first number tells how far to move horizontally, and the second number tells how far to move vertically.
Diameter A line segment that has endpoints on a circle and passes through the center of the circle.
Perfect Square The product of an integer multiplied by itself (e.g., 121 is a perfect square because 11 x 11 = 121).
Equation A statement that two mathematical expression are equal.
X-axis The horizontal number line on a coordinate plane.
Obtuse Triangle A triangle with one angle that measures more than 90 degrees.
Coordinate Plane A two-dimensional system in which the coordinates of a point are its distances from both a horizontal and vertical line called the axes.

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