# Study sets matching "geometry vocab"

Study sets

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point

line

plane

line segment

a location represented by a small dot

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

a flat surface that has no thickness, contains many lines and…

a part of a line consisting of two points called endpoints.

point

a location represented by a small dot

line

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

complementary angles

supplementary angles

adjacent angles

linear pair

Two angles whose measures have a sum of 90 degrees.

Two angles whose measures have a sum of 180 degrees.

Two angles that share a common vertex and side, but have no co…

Two adjacent angles whose non-common sides are opposite rays.

complementary angles

Two angles whose measures have a sum of 90 degrees.

supplementary angles

Two angles whose measures have a sum of 180 degrees.

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

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…

legs

slope angle

law of sines

inverse tangent

the two sides of a right triangle that form the right angle. t…

the acute angle a line forms with the x-axis on a coordinate g…

used to find measurements in non-right triangles using the sin…

the "undo" of the tangent function

legs

the two sides of a right triangle that form the right angle. t…

slope angle

the acute angle a line forms with the x-axis on a coordinate g…

midpoint

polygon

sides of a polygon

vertex of a polygon

The point that divides a segment into two congruent segments.

A closed plane figure formed by three or more line segments.

Line segments that form a polygon.

The exact intersection of two line segments.

midpoint

The point that divides a segment into two congruent segments.

polygon

A closed plane figure formed by three or more line segments.

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…

Polygon

Line Segment

Angle

Transformation

Plane figure that is formed by 3 or more segments called sides

Part of a line that consists of two endpoints

Two rays that have the same initial point

Operation that maps or moves an image

Polygon

Plane figure that is formed by 3 or more segments called sides

Line Segment

Part of a line that consists of two endpoints

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…

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

Point

Line

Skew lines

Parallel lines

An exact location in space .A

a straight path extending forever in both directions

lines in a different plane that will never meet

lines in the same plane that do not intersect

Point

An exact location in space .A

Line

a straight path extending forever in both directions

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

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…

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…

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

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

segment

ray

plane

line

Part of a line consisting of two points and all the points bet…

The part of a line that starts at an end point and extends for…

Flat surface that has no thickness and extends forever.

Straight path that has no thickness and extends forever.

segment

Part of a line consisting of two points and all the points bet…

ray

The part of a line that starts at an end point and extends for…

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…

angle

arc

collinear

noncollinear

intersection of 2 noncollinear rays at common endpoint (vertex)

part of circle defined by 2 endpoints

points that lie on same line

points not on the same line

angle

intersection of 2 noncollinear rays at common endpoint (vertex)

arc

part of circle defined by 2 endpoints

MIDPOINT

SEGMENT

CONGRUENT SEGMENTS

PARALLEL LINES

The point on a segment exactly halfway between the endpoints o…

Part of the line that consists of two endpoints and all points…

Two segments that are the same size and shape.

Coplanar lines that do not intersect

MIDPOINT

The point on a segment exactly halfway between the endpoints o…

SEGMENT

Part of the line that consists of two endpoints and all points…

bases

bisect

circle

concentric circles

the congruent parallel polygons that form the "top" and "botto…

to divide into two congruent parts

the set of all points on a flat surface that are the same dist…

circles that have the same center

bases

the congruent parallel polygons that form the "top" and "botto…

bisect

to divide into two congruent parts

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