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Geometry Vocabulary

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Section 1

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obtuse angle

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Geometry Math

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6 years ago

Date created

Mar 1, 2020

Cards (32)

Section 1

(32 cards)

obtuse angle

Front

An angle that measures more than 90 degrees but less than 180 degrees

Back

Midpoint

Front

A point that divides a segment into two congruent segments

Back

ray

Front

a part of a line that starts at an endpoint and extends forever in one direction

Back

supplementary angles

Front

Two angles whose sum is 180 degrees

Back

acute angle

Front

an angle that measures less than 90 degrees

Back

Plane

Front

A flat surface that has no thickness and extends forever.

Back

vertex

Front

The common endpoint of an angle

Back

Collinear

Front

Points that lie on the same line

Back

chord

Front

A segment whose endpoints lie on a circle

Back

Line

Front

A straight path that has no thickness and extends forever.

Back

circle

Front

The set of all points in a plane that are the same distance from a given point called the center

Back

Segment bisector

Front

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

Back

Angle

Front

A figure formed by two rays with a common endpoint

Back

Radius

Front

The distance from the center of a circle to any point on the circle

Back

opposite rays

Front

two rays that have a common endpoint and form a line

Back

Line segment

Front

A part of a line with two endpoints

Back

Coplanar

Front

points and lines that all lie on the same plane

Back

Congruent

Front

Having the same size and shape

Back

complementary angles

Front

Two angles whose sum is 90 degrees

Back

Tangent

Front

A line in the plane of a circle that intersects the circle in exactly one point.

Back

Angle bisector

Front

a ray that divides an angle into two congruent angles

Back

Point

Front

indicates a location and has no size

Back

adjacent angles

Front

two angles that share a common vertex and side, but have no common interior points

Back

intersection

Front

the set of points the figures have in common

Back

diameter

Front

a chord that passes through the center of the circle

Back

straight angle

Front

an angle that measures 180 degrees

Back

postulate

Front

an accepted statement of fact

Back

right angle

Front

an angle that measures 90 degrees

Back

vertical angles

Front

two angles whose sides form two pairs of opposite rays

Back

linear pair

Front

A pair of adjacent angles whose noncommon sides are opposite rays.

Back

Secant

Front

A line that intersects a circle in two points

Back

space

Front

the set of all points

Back