#### Study sets matching "geometry vocab"

#### Study sets matching "geometry vocab"

obtuse

acute

right

perpendicular

an angle that is more than 90° and less than 180°

an angle smaller than a right angle (it is less than 90 degree…

an angle of 90°

lines that are at right angles (90°) to each other

obtuse

an angle that is more than 90° and less than 180°

acute

an angle smaller than a right angle (it is less than 90 degree…

acute angle

adjacent angles

angle

angle bisector

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

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

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

Definition of Complementary Angles

Definition of Supplementary Angles

Linear Pair Postulate

Vertical Angles Theorem

Two angles whose sum is 90 degrees

Two angles whose sum is 180 degrees

Linear Pairs are Supplementary!

Vertical Angles are CONGRUENT

Definition of Complementary Angles

Two angles whose sum is 90 degrees

Definition of Supplementary Angles

Two angles whose sum is 180 degrees

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…

Vertical Angles

Angle Addition Postulate

Linear Pairs

Consecutive Adjacent Angles

vertical angles are equal in measure

If C is a point in the interior of ∠AOB, then m∠AOC + m∠COB =…

Two angles that form a linear pair are supplementary (=180⁰)

Consecutive adjacent angles on a line sum to 180⁰

Vertical Angles

vertical angles are equal in measure

Angle Addition Postulate

If C is a point in the interior of ∠AOB, then m∠AOC + m∠COB =…

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…

Inductive Reasoning

Conjecture

Counter Example

Conditional Statement

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

A statement that is believed to be true

An example that proves a conjecture or statement false

A statement that can be written in the form "if p then q" wher…

Inductive Reasoning

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

Conjecture

A statement that is believed to be true

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

vertex

side

quadrilateral

triangle

The point where two sides of a polygon meet.

A line segment that forms part of a polygon.

A polygon with four sides.

A polygon with three sides.

vertex

The point where two sides of a polygon meet.

side

A line segment that forms part of a polygon.

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…

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

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

Inductive Reasoning

Conjecture

Counter Example

Conditional Statement

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

A statement that is believed to be true

An example that proves a conjecture or statement false

A statement that can be written in the form "if p then q" wher…

Inductive Reasoning

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

Conjecture

A statement that is believed to be true

Midpoint

Segment

Parallel

Perpendicular

Point in the middle of a segment

A line with two endpoints

Two lines that never intersect

Two lines that make a right angle

Midpoint

Point in the middle of a segment

Segment

A line with two endpoints

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)

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…

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.

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

line segment

ray

a location in space

straight pat of points that continues infinitely in both direc…

A part of a line with two endpoints

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

point

a location in space

line

straight pat of points that continues infinitely in both direc…

Vertical Angles

Linear Pair

Supplementary Angles

Angle

Two nonadjacent angles who share a common initial point and th…

Two adjacent angles that together form a line.

Two angles whose sum is 180 degrees.

Formed when two rays share an initial point.

Vertical Angles

Two nonadjacent angles who share a common initial point and th…

Linear Pair

Two adjacent angles that together form a line.