# Study sets matching "geometry vocab"

Study sets

Diagrams

Classes

Users

Point

Line

Plane

Collinear points

Has no dimension. A dot represents a point.

a straight path that extends without end in opposite directions

A two-dimensional flat surface that extends in all directions

points that lie on the same line

Point

Has no dimension. A dot represents a point.

Line

a straight path that extends without end in opposite directions

Midpoint

Segment bisector

Straight angle

Obtuse angle

A point that divides a segment into two congruent segments

A point, line, ray, or segment that divides a segment into two…

Measures 180 degrees

Measures more than 90 degrees and less than 180 degrees

Midpoint

A point that divides a segment into two congruent segments

Segment bisector

A point, line, ray, or segment that divides a segment into two…

angle-angle similarity

angle

congruent

corresponding sides

if two angles of one triangle are congruent to two correspondi…

in geometric figures, usually formed by two segments with a co…

exactly the same shape and size

sides in two or more figures that are images of each other wit…

angle-angle similarity

if two angles of one triangle are congruent to two correspondi…

angle

in geometric figures, usually formed by two segments with a co…

arc length

arc measure

center

central angle

the length of an arc; how far from one point on a circle to an…

the measure in degrees of an arc's central angle

a fixed point from which all points on the circle are equidist…

an angle with its vertex at the center of a circle or polygon

arc length

the length of an arc; how far from one point on a circle to an…

arc measure

the measure in degrees of an arc's central angle

Point

Line

Plane

Coplanar Points

a specific location. It has no dimension and is represented by…

a connected straight path. It has no thickness and it continue…

a flat surface. It has no thickness and it extends forever in…

points that lie on the same plane

Point

a specific location. It has no dimension and is represented by…

Line

a connected straight path. It has no thickness and it continue…

Angle

Side

Vertex

Acute Angle

Two different rays with the same endpoint.

Rays lines or segments that make up an angle and meet at a ver…

Endpoint where two rays, lines or line segments of an angle me…

Angle with measure between 0° and 90°

Angle

Two different rays with the same endpoint.

Side

Rays lines or segments that make up an angle and meet at a ver…

line segment

congruent segments

point

line

part of a line with two endpoints, labeled with 2 capital lett…

Segments that have the same length (same size and shape)

a location in space, labeled with one capital letter

two points connected extending in both directions with no endp…

line segment

part of a line with two endpoints, labeled with 2 capital lett…

congruent segments

Segments that have the same length (same size and shape)

conjecture

counterexample

deductive reasoning

inductive reasoning

a statement you believe to be true based on inductive reasoning

a drawing, statement, or number that shows that a conjecture i…

the process of using logic to draw conclusions from given fact…

the process of reasoning that a rule or statement is true beca…

conjecture

a statement you believe to be true based on inductive reasoning

counterexample

a drawing, statement, or number that shows that a conjecture i…

conjecture

Conditional

Converse

Inverse

an educated guess based on presented facts. Remember not all c…

begins wit an "If" statement called a hypothesis and ends wit…

You exchange the the hypothesis and the conclusion. Example: I…

You negate or make both the hypothesis and conclusion invalid…

conjecture

an educated guess based on presented facts. Remember not all c…

Conditional

begins wit an "If" statement called a hypothesis and ends wit…

Acute Angle

Adjacent Angles

Angle

Angle Addition Postulate

Angle that measures between 0 and 90 degrees.

Angles which share a side and a vertex.

Is formed by two rays connected with an endpoint.

If S is in the interior of <PQR, then the m<PQS + m<SQR = m<PQ…

Acute Angle

Angle that measures between 0 and 90 degrees.

Adjacent Angles

Angles which share a side and a vertex.

acute angle

adjacent angles

angle

angle bisector

An angle that measures greater than 0 and less than 90 degrees.

Two angles in the same plane with a common vertex and a common…

A figure formed by two rays with a common endpoint.

A ray that divides an angle into two congruent angles.

acute angle

An angle that measures greater than 0 and less than 90 degrees.

adjacent angles

Two angles in the same plane with a common vertex and a common…

point

line

ray

line segment

a fixed location in space

a figure made up of points that extend forever in both directi…

a figure that has one endpoint and extends forever in the othe…

a piece of a line marked by two endpoints

point

a fixed location in space

line

a figure made up of points that extend forever in both directi…

alternate interior angles

conjecture

line

proof by contradiction

inside the parallel lines, opposite sides of the transversal

An educated guess

A straight, unbroken set of points that goes on forever. It ha…

a form of proof that establishes the truth or validity of a pr…

alternate interior angles

inside the parallel lines, opposite sides of the transversal

conjecture

An educated guess

complementary angles

supplementary angles

vertical angles

linear pair of angles

two angles that add up to 90 degrees

two angles that add up to 180 degrees

angles that are opposite from each other on intersecting lines…

supplementary and adjacent

complementary angles

two angles that add up to 90 degrees

supplementary angles

two angles that add up to 180 degrees

acute angle

angle

area

conjecture

an angle with measure greater than 0 degrees but less than 90…

formed by two rays at a common endpoint; in geometric figures,…

on a flat surface, the number of non-overlapping square units…

an educated guess. often results from noticing a pattern durin…

acute angle

an angle with measure greater than 0 degrees but less than 90…

angle

formed by two rays at a common endpoint; in geometric figures,…

Lines

Planes

Ray

Coplanar

a series of points that extends in two opposite directions wit…

a flat surface with no thickness

is the part of a line consisting of one endpoint and all the p…

points and lines in the same planes

Lines

a series of points that extends in two opposite directions wit…

Planes

a flat surface with no thickness

line

point

arc

midpoint

a straight one dimensional figure having no thickness and exte…

A zero dimensional object. ... Has no part.

any portion of the circumference of a circle.

The point on a line segment dividing it into 2 congruent parts.

line

a straight one dimensional figure having no thickness and exte…

point

A zero dimensional object. ... Has no part.

Inductive Reasoning

Conjecture

Counterexample

Conditional Statement

It is used to draw a conclusion based on a pattern.

A statement that is believed to be true.

It is an example that proves a conjecture or statement is fals…

A statement written in if then form with a hypothesis and conc…

Inductive Reasoning

It is used to draw a conclusion based on a pattern.

Conjecture

A statement that is believed to be true.

Line

Collinear points

Coplanar

Segment

A straight, unbroken set of points that goes on forever. It ha…

A set of points that lie on the same line

Points, lines, or segments that lie on the same plane

A part of a line with two endpoints.

Line

A straight, unbroken set of points that goes on forever. It ha…

Collinear points

A set of points that lie on the same line

Parallel Lines

Perpendicular lines

Skew lines

Parallel Planes

Coplanar lines that do not intersect.... Their equations have the…

Lines that intersect at 90 degree angles.... Their slopes have a…

Lines that are not coplanar, not parallel and do not intersect.

Planes that do not intersect

Parallel Lines

Coplanar lines that do not intersect.... Their equations have the…

Perpendicular lines

Lines that intersect at 90 degree angles.... Their slopes have a…