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7th Grade Math PSSA1

TermDefinition
Acute triangle A triangle that has each angle measuring less than 90 degrees.
Coordinate plane/graph A two-dimensional system in which the coordinates of a point are its distances from both a horizontal and a vertical line are called the axes
Ordered Pairs The pairs of numbers plotted on the coordinate graph.
Origin The beginning of ordered pairs (0,0). Center of a coordinate plane.
Equilateral triangle A triangle whose sides are the same length
Isosceles triangle A triangle that has exactly two congruent sides.
Obtuse triangle A triangle with one angle that measures more than 90 degrees.
Perfect square The product of an integer multiplied by itself (e.g., 121 is a perfect square because 11x11=121)
Proportion An equation showing that two ratios are equal.
Scalene triangle A triangle with no congruent sides.
Radius The distance from the center of a circle to the outside.
Diameter The distance from one side of a circle to the other side. The line passes through the center of the circle.
Reciprocal When you flip a fraction's numerator and denominator.
Unit Rate A rate per one
Absolute Value The distance a number is from zero. Is always positive.
Mean Average.
Median The middle number in a set of data.
Mode The number that shows up the most in a set of data.
Range The difference between the highest and lowest value in a set of data.
Improper Fraction A fraction where the numerator is larger than the denominator. It can be changed into a mixed number.
Created by: sara3636
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