# Study sets matching "geometry vocab"

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alpha

angle

arithmetic sequence

clinometer

a Greek letter often used to represent angle measure. Others u…

formed by two rays joined at a common endpoint

an ordered sequence of mathematical terms in which a constant…

a device used to measure angles of elevation and depression

alpha

a Greek letter often used to represent angle measure. Others u…

angle

formed by two rays joined at a common endpoint

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…

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

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

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…

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.

similarity

dilation

point of dilation / stretch point

scale factor / zoom factor

-same shape, but not necessarily the same size... -angles are con…

-a transformation where a point on a figure is stretched propo…

-the point of a figure that is stretched to form a dilation of…

-the number a side is multiplied by to make a bigger or smalle…

similarity

-same shape, but not necessarily the same size... -angles are con…

dilation

-a transformation where a point on a figure is stretched propo…

radius (regular polygon)

polygon

remote interior angles

linear scale factor

a line segment that connects the center of a regular polygon w…

a two-dimensional closed figure of three or more line segments…

when a triangle has an exterior angles, these angles are the t…

the ratio of similarity. the ratio of any pair of correspondin…

radius (regular polygon)

a line segment that connects the center of a regular polygon w…

polygon

a two-dimensional closed figure of three or more line segments…

Addition Property of Equality

Subtraction Property of Equality

Multiplication Property of Equality

Division property of Equality

If a=b, then a+c=b+c

If a=b, then a-c=b-c

If a=b, then a times c= b times c

If a=b and c does not equal 0, then a/c = b/c

Addition Property of Equality

If a=b, then a+c=b+c

Subtraction Property of Equality

If a=b, then a-c=b-c

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.

complementary angles

supplementary angles

congruent

linear pair

Two angles whose sum is 90 degrees

Two angles whose sum is 180 degrees

Having the same size and shape

Two adjacent angles formed by the intersection of two lines. T…

complementary angles

Two angles whose sum is 90 degrees

supplementary angles

Two angles whose sum is 180 degrees

Linear Pair

Supplementary Angles

Complementary Angles

Vertical Angles

A pair of angles that share a side and a vertex

Two angles that add to 180

Two angles that add to 90

A pair of opposite congruent angles formed by intersecting lin…

Linear Pair

A pair of angles that share a side and a vertex

Supplementary Angles

Two angles that add to 180

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

Undefined Terms

Point

Line

Plane

Basic figures which cannot be defined by using other figures

An exact location represented by a dot.

A straight path that has no thickness and extends forever

a flat surface that extends forever

Undefined Terms

Basic figures which cannot be defined by using other figures

Point

An exact location represented by a dot.

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…

Collinear

Plane

Line

Point

points that lie on the same line

a flat surface that has no thickness & extends forever

a straight path that extends forever in opposite directions

a location in a plane. has no size

Collinear

points that lie on the same line

Plane

a flat surface that has no thickness & extends forever

Point

Line

Line Segment

Plane

Indicates a position or location in space

A collection of points going endlessly in both directions

Part of a line with TWO endpoints

A flat surface going endlessly in all directions

Point

Indicates a position or location in space

Line

A collection of points going endlessly in both directions

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.

Quadrilateral

Trapezoid

Parallelogram

Rectangle

You are the general term for a flat shape with four straight s…

you are a four sided figure with one pair of parallel sides.

You are a 4-sided flat shape with straight sides where opposit…

You are a 4-sided flat shape with straight sides where all int…

Quadrilateral

You are the general term for a flat shape with four straight s…

Trapezoid

you are a four sided figure with one pair of parallel sides.

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…

Perpendicular Lines

Conditional Statement

Converse

Bi-Condtional Statement

Lines that intersect to form right angles

A statement that can be written as an "if...then..." statement

A statement that is formed by switching the hypothesis and con…

When both a conditional statement and its converse are true -…

Perpendicular Lines

Lines that intersect to form right angles

Conditional Statement

A statement that can be written as an "if...then..." statement

undefined terms

point

line

plane

A word, ususally readily understood, that is not formually exp…

A one-dimensional object with no size. It is represented by a…

Infinitely many points that extend in either direction. They a…

A 2D flat surface that extends indefinitely in all directions…

undefined terms

A word, ususally readily understood, that is not formually exp…

point

A one-dimensional object with no size. It is represented by a…

Point

Line

Plane

Line Segment

A specific location. (It does not have a measure)

A connected straight path that goes on forever.

A flat surface that extends forever.

A line with 2 endpoints and containing all the points between…

Point

A specific location. (It does not have a measure)

Line

A connected straight path that goes on forever.