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Point

Midpoint

Line

Plane

It is a location that is undefined.

Point that divides a segment into two congruent.

A series of points that extend in two directions infinitely t…

A flat surface that has no thickness.

Point

It is a location that is undefined.

Midpoint

Point that divides a segment into two congruent.

point

line

line segment

ray

a location or position in space

an infinite set of points with no endpoints

two endpoints with all the points in between

part of a line, consisting of one endpoint and all the points…

point

a location or position in space

line

an infinite set of points with no endpoints

acute angle

angle

angle measure

arc

An angle with a measure less than 90 drgrees

Two rays that share an endpoint.

The measure of the size of an angle. It tells how far one sid…

Part of a circle between any two of its points.

acute angle

An angle with a measure less than 90 drgrees

angle

Two rays that share an endpoint.

Point

Line

Plane

Line Segment

Undefined term in Euclidean Geometry. A location in space. No…

Undefined term in Euclidean Geometry. The straight path of a…

Undefined term in Euclidean Geometry. The straight path of a…

A portion of a line that has definite length, and two endpoin…

Point

Undefined term in Euclidean Geometry. A location in space. No…

Line

Undefined term in Euclidean Geometry. The straight path of a…

ray

point

acute angle

line

a part of a line that starts at one endpoint and extends fore…

An exact location in space

An angle that measures less than 90 degrees

A straight path that extends without end in opposite directions

ray

a part of a line that starts at one endpoint and extends fore…

point

An exact location in space

Point

Line

Plane

Collinear

A point has no size.

Goes on forever in both directions.... Two points create a line.

A flat surface that has no thickness.... Three points create a p…

Points that lie on the same line.... Points E, F, & C are collin…

Point

A point has no size.

Line

Goes on forever in both directions.... Two points create a line.

Line

Line Segment

Ray

Opposite Ray

This has no beginning point or endpoint. It continues forever…

When two endpoints are connected with a straight line.

A part of a line that has exactly one endpoint.

A ray that goes in an opposite direction from a vertex.

Line

This has no beginning point or endpoint. It continues forever…

Line Segment

When two endpoints are connected with a straight line.

acute angle

adjacent angles

complementary angles

obtuse angle

an angle whose measure is less than 90 degrees

two angles that share a common side and vertex but do not sha…

two angles whose sum is 90 degrees

an angle whose measure is greater than 90 degrees (but less t…

acute angle

an angle whose measure is less than 90 degrees

adjacent angles

two angles that share a common side and vertex but do not sha…

angle bisector

complementary angles

supplementary angles

midpoint

A ray that divides an angle into two angles that both have th…

Two angles whose measure have a sum of 90.

Two angles whose measure have a sum of 180.

The point that divides a segment into two segments that have…

angle bisector

A ray that divides an angle into two angles that both have th…

complementary angles

Two angles whose measure have a sum of 90.

conjecture

counterexample

Collinear Points

Coplanar Points

an unproven statement based on observations.

an example that shows a conjecture is false.

Points that lie in the same line.

Points that lie in the same plane.

conjecture

an unproven statement based on observations.

counterexample

an example that shows a conjecture is false.

Point

Line

Plane

Segment

Represents a position in space.

Continues without end in opposite directions.

A flat surface with no thickness that continues without end i…

Part of a line with two endpoints.

Point

Represents a position in space.

Line

Continues without end in opposite directions.

Point

Line

Plane

Ray

A spot in space

A set of points that extends in opposite directions without e…

A set of points that extends in all directions without ending

A set of points that extend in one direction without ending

Point

A spot in space

Line

A set of points that extends in opposite directions without e…

Point

Line

Plane

Collinear Points

indicates a location, has no size

a straight path that extends in two opposite directions witho…

flat surface that extends without end and has no thickness

Points on the same line

Point

indicates a location, has no size

Line

a straight path that extends in two opposite directions witho…

acute angle

acute triangle

angle

complementary angle

An angle that measures less than 90 degrees.

A triangle with all angles measuring less than 90 degrees.

A figure formed by two rays sharing a common endpoint called…

Two angles whose measures add to 90 degrees.

acute angle

An angle that measures less than 90 degrees.

acute triangle

A triangle with all angles measuring less than 90 degrees.

Supplementary

Complementary

perpendicular

segment bisector

Two angles whose sum is 180 degrees

Two angles whose sum is 90 degrees

two lines that intersect at right angles

a line, ray or segment that divides a segment into 2 congruen…

Supplementary

Two angles whose sum is 180 degrees

Complementary

Two angles whose sum is 90 degrees

Angle

Vertex

Acute Angle

Obtuse Angle

two rays with a common endpoint

the common endpoint of two rays ... that form an angle

An angle whose measure in degrees is between 0 and 90

An angle whose measure in degrees is between 90 and 180

Angle

two rays with a common endpoint

Vertex

the common endpoint of two rays ... that form an angle

Point

Line

Plane

Collinear

A point has no size.

Goes on forever in both directions.... Two points create a line.

A flat surface that has no thickness.... Three points create a p…

Points that lie on the same line.

Point

A point has no size.

Line

Goes on forever in both directions.... Two points create a line.

segment

ray

angle

sides of an angle

a part of a line bound by two distinct end points

a line with a starting point, but no end point

the space between two intersecting, usually measured in degre…

two rays intersecting at their endpoints

segment

a part of a line bound by two distinct end points

ray

a line with a starting point, but no end point

Point

Line

Line Segment

Rays

A location in space represented with a single point. It is di…

Made up of points that are a straight path that goes on infin…

Made up of pointx that are straight path that has a beginning…

A set of points that are straight and can extend to infinity…

Point

A location in space represented with a single point. It is di…

Line

Made up of points that are a straight path that goes on infin…

Equilateral Triangle

Isosceles Triangle

Scalene Triangle

Quadrilateral

A triangle with all sides of equal length

A triangle with two sides of equal length

A triangle with no sides of equal length

A polygon with four sides

Equilateral Triangle

A triangle with all sides of equal length

Isosceles Triangle

A triangle with two sides of equal length

acute angle

angle

angle measure

arc

An angle with a measure less than 90 drgrees

Two rays that share an endpoint.

The measure of the size of an angle. It tells how far one sid…

Part of a circle between any two of its points.

acute angle

An angle with a measure less than 90 drgrees

angle

Two rays that share an endpoint.

Ray

line

point

line segment

A part of a line, with one endpoint, that continues without e…

A straight path that goes without end in two directions.

A location in space.

A part of a line with two endpoints.

Ray

A part of a line, with one endpoint, that continues without e…

line

A straight path that goes without end in two directions.

Point

line

Plane

collinear

only takes two points to make a line and indicates position

extends in opposite directions any two points on a line can n…

flat expanse of points expanding in every direction and three…

form a straight line when they are connected

Point

only takes two points to make a line and indicates position

line

extends in opposite directions any two points on a line can n…

point

line

plane

collinear points

A point is undefined, but you can think of it as a location.

A line is undefined, but you can think of it as a series of p…

A plane is undefined, but you can think of it as a flat surfa…

Collinear points lie on the same line.

point

A point is undefined, but you can think of it as a location.

line

A line is undefined, but you can think of it as a series of p…

angle

acute

right

obtuse

the figure formed by two rays with the same endpoint

an angle that measures between 0 and 90 degrees

an angle that measures 90 degrees

an angle that measures between 90 and 180 degrees

angle

the figure formed by two rays with the same endpoint

acute

an angle that measures between 0 and 90 degrees

ray

point

line

congruent

a part of a line that starts at one endpoint and extends fore…

An exact location in space

A straight path that extends without end in opposite directions

having the same size and shape

ray

a part of a line that starts at one endpoint and extends fore…

point

An exact location in space

point

line

line segment

ray

a location in space

straight pat of points that continues infinitely in both dire…

A part of a line with two endpoints

A part of a line that starts at one endpoint and extends fore…

point

a location in space

line

straight pat of points that continues infinitely in both dire…

Bisect

Complementary

Supplementary

Linear Pair

To cut in half. To make two equal (congruent) parts.

Two angles whose sum is 90 degrees.

Two angles whose sum is 180 degrees.

Two angles that are both adjacent and supplementary.

Bisect

To cut in half. To make two equal (congruent) parts.

Complementary

Two angles whose sum is 90 degrees.

Addition Property

Subtraction Property

Division Property

Multiplication Property

If A = B, then A + C = B + C

If A = B, then A - C = B - C

If A = B, then A/C = B/C as long as C isn't 0.

If A = B, then AxC = BxC

Addition Property

If A = B, then A + C = B + C

Subtraction Property

If A = B, then A - C = B - C

Point

Line

Plane

Collinear

A specific location, it has no size.

Goes on forever in both directions.... It must have 2 points.

A flat surface that has no thickness.... It must have 3 points.

Points that lie on the same line.... Points A, B, & C

Point

A specific location, it has no size.

Line

Goes on forever in both directions.... It must have 2 points.

Point

Line

Plane

Collinear

A location with no size or shape.

Made up of points with no thickness or width; Extends indefin…

A flat surface made up of points that extends indefinitely in…

Points that lie on the same line.

Point

A location with no size or shape.

Line

Made up of points with no thickness or width; Extends indefin…

point

line

plane

collinear points

A point is undefined, but you can think of it as a location.

A line is undefined, but you can think of it as a series of p…

A plane is undefined, but you can think of it as a flat surfa…

Collinear points lie on the same line.

point

A point is undefined, but you can think of it as a location.

line

A line is undefined, but you can think of it as a series of p…

point

line

plane

collinear

a location, with no size or dimension

a "stream" of points that has no width or depth

a flat surface that extends indefinitely in all directions

points that lie on the same line

point

a location, with no size or dimension

line

a "stream" of points that has no width or depth

Point

Line

Line Segment

Ray

A location on a flat plane

A straight path that goes on forever in two directions

A part of a line with two endpoints

A straight path that begins at one point and goes on forever…

Point

A location on a flat plane

Line

A straight path that goes on forever in two directions