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# Math NWEA

TermDefinition
Ratio A comparison of two numbers by division
Equivalent Ratios Two ratios that name the same number
Rate A ratio involving two quantities in different units
Unit Rate The rate for one unit of a given quantity
Unit Cost A unit rate that gives the cost per unit
Proportion An equation stating that two ratios are equal
Cross Products You can find this of two ratios by multiplying the numerator of each ratio by the denominator of the other ratio
Scale The ratio that compares a length in a drawing or model to the length in an original object
Percent A ratio that compares a number two one-hundred
Circle Graph A graph id data in which the entire circle represents the whole
Point A location in space. It has no size.
Line A series of points that extends in two opposite directions without end.
Segment Consists of two endpoints and all the points of the line between the endpoints.
Ray Consists of one endpoint and all the points of the line on one side of the endpoint
Plane A flat surface with no thickness that extends in all directions on a surface
Intersecting Lines Lines that have exactly one point in common
Parallel Lines Lines that have no points in common and never will.
Skew Lines Lines that are not parallel and do not intersect.
Angles A figure formed by two rays with a common endpoint
Vertex The point of intersection of two sides of an angle or figure
Degrees To measure angles in units.
Acute Angles Measures less then ninety degrees.
Right Angles Measures ninety degrees.
Obtuse Angles Measures between ninety and one hundred eighty degrees
Straight Angles Measures one hundred eighty degrees
Perpendicular Lines Lines that intersect and form right angles
Complementary Angles The sum of the measures of two angles is ninety degrees
Supplementary Angles The sum of the measures of two angles that equal one hundred eighty degrees
Vertical Angles Two intersecting lines
Congruent Angles Angles with equal measures
Transversal A line that intersects two or more lines
Triangle A closed figure made of three line segments that meet only at their endpoints.
Acute Triangle Three acute angles
Obtuse Triangle One obtuse angle
Right Triangle One right angle
Equilateral Triangle Three congruent sides
Isosceles Triangle At least two congruent sides
Scalene Triangle No congruent sides
Congruent Segments Segments that are the same length
Polygon A closed figure that has three or more line segments that do not cross
Regular Polygons A polygon with all sides congruent and all angles congruent
Irregular Polygons
Created by: Lydia Struble

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