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Geometry . Unit 1 Vocabulary

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Section 1

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plane

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Geometry Math

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Last updated

6 years ago

Date created

Mar 1, 2020

Cards (28)

Section 1

(28 cards)

plane

Front

flat surface made up of points and extends indefinitely in all directions

Back

straight angle

Front

angle with adegree measure of 180 degrees

Back

parallel lines

Front

two coplanar lines that never intersect

Back

acute angle

Front

angle with a degree measure less than 90 degrees

Back

point

Front

location with no size or shape

Back

complementary angles

Front

two angles with measures that add up to 90 degrees

Back

distance formula

Front

formula used to find distance between two points on a coordinate plane

Back

adjacent angles

Front

two anges that share a common side and vertex

Back

segment bisector

Front

segment, line or plane that intersects a segment at its midpoint

Back

collinear points

Front

points that lie on the same line

Back

congruent segments

Front

two segments with the same length

Back

right angle

Front

angle with a degree measure of 90 degrees

Back

midpoint formula

Front

formula used to find midpoint between two endpoints

Back

vertex

Front

common endpoint of an angle

Back

ray

Front

line that extends indefinitely in only one direction

Back

angle

Front

the intersection of two rays at an enedpoint

Back

linear pair

Front

adjacent angles that are supplementary and combined form a straight line

Back

perpendicular bisector

Front

line, segment or ray perpendicular to a segment at its midpoint

Back

line

Front

made up of points with no thickness or width, extends indefinitely in both directions

Back

angle bisector

Front

line or ray that divides an ange into two equal parts

Back

vertical angles

Front

two angles directly across from each other on intersecting lines

Back

line segment

Front

measurable part of a line consisting of two endpoints

Back

congruent angles

Front

two angles with the same measure

Back

segment addition postulate

Front

If A, B, and C are collinear points and B is between A and C, then AB + BC = AC

Back

supplementary angles

Front

two angles with measures that add up to 180 degrees

Back

obtuse angle

Front

angle with a degree measure greater than 90 degrees

Back

coplanar points

Front

points that lie on the same plane

Back

perpendicular

Front

two lines that intersect at a 90 degree angle

Back