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Geometry Intro Vocabulary
Vocabulary matching set for first sections of High School Geometry
Terms in this set (30)
The 3 most basic figures in geometry which cannot be defined using other figures: point, line, and plane
Names a location and has no size. It is represented by a dot.
Straight path that has no thickness and extends forever.
Flat surface that has no thickness and extends forever
Part of a line consisting of two points and all points between them
Point at one end of a line segment or the starting point of a ray
Part of a line that starts at an endpoint and extends forever in one direction.
Two rays that have a common endpoint and form a line.
Points that lie on the same line
Points that lie in the same plane
A statement that is accepted as true without proof
Segments that have the same length
The point on a line segment that bisects, or divides, the segment into two congruent segments.
Figure formed by two rays, or sides, with a common endpoint.
The common endpoint of an angle. (A point where two lines meet)
Measure of an angle
Given in degrees using protractor with a range from 0 degrees to 180 degrees.
An angle that measures greater than 0 degrees and less than 90 degrees
An angle that measures 90 degrees
An angle that measures greater than 90 degrees and less than 180 degrees
An angle formed by two opposite rays and measures 180 degrees
Angles that have the same degree measure
A ray that divides an angle into two congruent angles
Two angles whose measures add up to 90 degrees
Two angles whose measures add up to 180 degrees
Two angles in the same plane with a common vertex and a common side but no common interior points
Linear Pair Angles
A pair of adjacent angles whose noncommon sides are opposite rays forming a line
Two nonadjacent angles formed by two intersecting lines
Coplanar lines that do not intersect
Coplanar lines that form right angles-90 degree angles.
A measure of an angle based upon 360 degrees in a circle. 1 degree = 1/360 of a circle
Recommended textbook explanations
Geometry: A Common Core Curriculum
Holt Geometry: Student Edition
David J. Chard, Earlene J. Hall, Edward B. Burger, Freddie L. Renfro, Holt McDougal, Paul A. Kennedy, Steven J. Leinwand
Chard, Edward B. Burger, Freddie L. Renfro, Seymour, Steven J. Leinwand, Tom W. Roby, Waits
Larson Geometry (Florida)
Boswell, Larson, Stiff, Timothy D. Kanold
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