# Study sets matching "geometry vocab"

Point

Line

Coplanar

Collinear

The intersection of a line and a plane

The intersection of two planes

Points that lie in the same plane

Points that lie in a line

Point

The intersection of a line and a plane

Line

The intersection of two planes

Point

Line

Plane

Segment

Names a location and has no size.

A straight path that has no thickness and extends forever.

Is a flat surface that has no thickness and extends forever.

Is the part of a line consisting of two points and all points…

Point

Names a location and has no size.

Line

A straight path that has no thickness and extends forever.

Point

Line

Angle

Line Segment

dot that marks location but doesn't have a size

goes on forever and has no size

measures amount of rotation a ray has done at the vertex (ex.…

2 endpoints that can be measured

Point

dot that marks location but doesn't have a size

Line

goes on forever and has no size

Line

Line segment

Ray

Parallel line

Long straight thin mark that extends in both directions and ne…

A Line that ends on both sides

A part of a line that has only one endpoint

Lines that never intersect or cross each other

Line

Long straight thin mark that extends in both directions and ne…

Line segment

A Line that ends on both sides

congruent triangles

vertical angles

complementary angles

supplementary angles

When two triangles are congruent they will have exactly the sa…

each of the pairs of opposite angles made by two intersecting…

either of two angles whose sum is 90°.

either of two angles whose sum is 180°.

congruent triangles

When two triangles are congruent they will have exactly the sa…

vertical angles

each of the pairs of opposite angles made by two intersecting…

acute angle

adjacent angles

angle

angle biscetor

An angle with a degree measure of less than 90 degrees.

Two angles that lie in the same plane, have a common vertex an…

The intersection of two noncollinear rays at a common endpoint…

A ray that divides an angle into two congruent angles.

acute angle

An angle with a degree measure of less than 90 degrees.

adjacent angles

Two angles that lie in the same plane, have a common vertex an…

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…

point

line

plane

collinear

a location

it is made up of points; it has no thickness or width and goes…

it is a flat surface made up of points that extends infinitely…

points that are on the same line

point

a location

line

it is made up of points; it has no thickness or width and goes…

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

Parallel

Right angle

Obtuse angle

Two lines that intersect to form right angles

Two lines that never intersect

measures 90 degrees

measures more than 90 but less than 180

Perpendicular

Two lines that intersect to form right angles

Parallel

Two lines that never intersect

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…

acute angle

corresponding angle

Cylinder

Diameter

An angle measuring less than 90º.

Angles of separate figures that are in the SAME position withi…

A solid figure with a pair of circular, parallel bases and a r…

The length across a circle, passing through the center of the…

acute angle

An angle measuring less than 90º.

corresponding angle

Angles of separate figures that are in the SAME position withi…

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

arc length

arc measure

center

central angle

the length of an arc

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

arc measure

the measure in degrees of an arc's central angle

Area

Perimeter

Area vs perimeter

Trapezoid

Area is the number of square units enclosed by the two dimensi…

Perimeter is the distance around the outside of a 2D shape.

Area is the number of square units enclosed by the 2D shape.... P…

Two dimensional shape with four sides and one pair of parallel…

Area

Area is the number of square units enclosed by the two dimensi…

Perimeter

Perimeter is the distance around the outside of a 2D shape.

counterexample

postulate

adjacent angles

complementary angles

an example that proves a statement false

an accepted statement of fact

are a pair of angles with a common vertex and a common side, b…

Two angles whose sum is 90 degrees

counterexample

an example that proves a statement false

postulate

an accepted statement of fact

between

congruent segments

construction

undefined term

in the middle, but not necessarily half way

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

to use tools to draw an object that is more precise

a word without a formal definition: point, line, and plane

between

in the middle, but not necessarily half way

congruent segments

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

Line

Line segment

Plane

Point

a straight set of points that goes on forever in opposite dire…

the part of a line between two end points

a flat surface that extends forever indefinitely in all direct…

it names a location in space

Line

a straight set of points that goes on forever in opposite dire…

Line segment

the part of a line between two end points

hexagon

parallel lines

pentagon

endpoint

A polygon with 6 sides.

Lines that are the same distance apart and will never cross or…

A polygon with 5 sides.

A point at the end of a line segment or ray.

hexagon

A polygon with 6 sides.

parallel lines

Lines that are the same distance apart and will never cross or…

linear pair

linear pair

midpoint

midpoint

2 adjacent angles whose noncommon sides are opposite rays

a point that divides, or bisects, a segment into 2 congruent s…

linear pair

2 adjacent angles whose noncommon sides are opposite rays

linear pair

acute angles

adjacent angles

area

bisect

an angle with a measure of less than 90 degrees

angles that share a side

the measure of how much space is contained within the interior…

to divide into two equal halves

acute angles

an angle with a measure of less than 90 degrees

adjacent angles

angles that share a side

Point

Line

Plane

Angle

A dot that specifies only location; it has no length, width, o…

A straight path that goes without end in two directions.

A flat surface made up of points which extend infinitely in al…

The intersection of two rays at a common endpoint.

Point

A dot that specifies only location; it has no length, width, o…

Line

A straight path that goes without end in two directions.

Collinear

Plane

Line

Point

points that lie on the same line

a flat surface that has no thickness & extends forever

a straight path that has no thickness & extends forever

a location that has no size

Collinear

points that lie on the same line

Plane

a flat surface that has no thickness & extends forever