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right angle

obtuse angle

straight angle

vertex

An angle that measures exactly 90 degrees.

An angle that is >90 degrees and <180 degrees.

An angle that measures exactly 180 degrees.

A point where two or more straight lines, rays or line segmen…

right angle

An angle that measures exactly 90 degrees.

obtuse angle

An angle that is >90 degrees and <180 degrees.

Right angle triangle

acute angle

obtuse angle

corresponding angles

3-sided shape with one angle equally 90°

angle measuring less than 90°

angle measuring greater than 90°

two non-adjacent angles made by the crossing of two lines by…

Right angle triangle

3-sided shape with one angle equally 90°

acute angle

angle measuring less than 90°

right angle

obtuse angle

straight angle

vertex

An angle that measures exactly 90 degrees.

An angle that is >90 degrees and <180 degrees.

An angle that measures exactly 180 degrees.

A point where two or more straight lines, rays or line segmen…

right angle

An angle that measures exactly 90 degrees.

obtuse angle

An angle that is >90 degrees and <180 degrees.

Supplementary

Complementary

Vertical

Adjacent

Two angles that add up to 180 degrees

Two angles that add up to 90 degrees

Two angles that share the same vertex and are straight across…

Two angles that share a common side and vertex

Supplementary

Two angles that add up to 180 degrees

Complementary

Two angles that add up to 90 degrees

vertex

right angle

acute angle

obtuse angle

a vertex of an angle is the common endpoint of the rays formi…

an angle that measures exactly 90 degrees

an angle with a measure greater then 0 degrees and less then…

an angle with a measure greater then 90 degrees and less then…

vertex

a vertex of an angle is the common endpoint of the rays formi…

right angle

an angle that measures exactly 90 degrees

transversal

corresponding angles

alternate interior angles

alternate exterior angles

a line that intersects parallel lines.

same position and same line of the transversal.

fall within parallel lines. opposite/diagonal sides of the tr…

fall outside the parallel lines. opposite/diagonal sides of t…

transversal

a line that intersects parallel lines.

corresponding angles

same position and same line of the transversal.

right angle

obtuse angle

straight angle

vertex

An angle that measures exactly 90 degrees.

An angle that is >90 degrees and <180 degrees.

An angle that measures exactly 180 degrees.

A point where two or more straight lines, rays or line segmen…

right angle

An angle that measures exactly 90 degrees.

obtuse angle

An angle that is >90 degrees and <180 degrees.

linear pair

alternate interior angle

alternate exterior angle

corresponding angles

a pair of adjacent (next to each other) supplementary angles…

when 2 lines are crossed by another lie and the pair of angle…

when 2 lines are crossed by another line and there are a pair…

angles at the same location at each intersection

linear pair

a pair of adjacent (next to each other) supplementary angles…

alternate interior angle

when 2 lines are crossed by another lie and the pair of angle…

adjacent

linear pair

vertical angles

complementary angles

Two angles that lie in the same plane and a common vertex and…

A par of adjacent angles with non-common sides that are oppos…

Two NON-Adjacent angles formed by two intersecting lines

Two angles with measures that add up to 90 degrees

adjacent

Two angles that lie in the same plane and a common vertex and…

linear pair

A par of adjacent angles with non-common sides that are oppos…

Adjacent angle

Vertical angle

Congruent angle

Complementary angle

Two angles are Adjacent angles when they share a common side…

Two angles are vertical angles when they are opposite angles…

Vertical angles are Congruent angles, meaning they have the s…

Two angles are Complementary angles when the sum of their mea…

Adjacent angle

Two angles are Adjacent angles when they share a common side…

Vertical angle

Two angles are vertical angles when they are opposite angles…

right angle

obtuse angle

straight angle

complimentary angles

angle that measures exactly 90 degrees.

angle that is >90 degrees and <180 degrees.

angle that measures exactly 180 degrees.

Angles whose measure adds up to 90 degrees.

right angle

angle that measures exactly 90 degrees.

obtuse angle

angle that is >90 degrees and <180 degrees.

Parallel postulate

Converse of corresponding angles theorem

Converse of the same side interior ang…

converse of alternate interior angles…

through a point P not on line l, there is exactly one line pa…

if two lines are cut by a transversal so that any pair of cor…

if two lines are cut by a transversal so that a pair of same…

if two lines are cut by a transversal so that any pair of alt…

Parallel postulate

through a point P not on line l, there is exactly one line pa…

Converse of corresponding angles theorem

if two lines are cut by a transversal so that any pair of cor…

Corresponding angles ... Pairs are 1 & 5;…

Same-side angles interior... Pairs 3 & 5;…

Alternate interior angles... Pairs 3 & 6;…

Alternate exterior angles... Pairs 1 & 8;…

Are on the same side of a traversal and on the same side of t…

Are between the parallel lines and on the same side of the tr…

Are between the parallel lines and on the opposite sides of t…

Are outside the parallel lines and on the opposite sides of t…

Corresponding angles ... Pairs are 1 & 5;…

Are on the same side of a traversal and on the same side of t…

Same-side angles interior... Pairs 3 & 5;…

Are between the parallel lines and on the same side of the tr…

Supplementary Angles

Complementary Angles

Vertical Angles

Adjacent Angles

Angles that add to 180 degrees.

Angles that add up to 90 degrees

A pair of opposite congruent angles formed by intersecting li…

Two angles that share a common side and have the same vertex

Supplementary Angles

Angles that add to 180 degrees.

Complementary Angles

Angles that add up to 90 degrees

right angle

obtuse angle

straight angle

vertex

An angle that measures exactly 90 degrees.

An angle that is >90 degrees and <180 degrees.

An angle that measures exactly 180 degrees.

A point where two or more straight lines, rays or line segmen…

right angle

An angle that measures exactly 90 degrees.

obtuse angle

An angle that is >90 degrees and <180 degrees.

right angle

obtuse angle

straight angle

vertex

An angle that measures exactly 90 degrees.

An angle that is >90 degrees and <180 degrees.

An angle that measures exactly 180 degrees.

A point where two or more straight lines, rays or line segmen…

right angle

An angle that measures exactly 90 degrees.

obtuse angle

An angle that is >90 degrees and <180 degrees.

Acute Angle

Obtuse Angle

Right Angle

Straight angle

An angle that measures less than 90 degrees.

An angle that measures more than 90 degrees, but less than 18…

An angle that measures 90 degrees.

An angle that is 180 degrees.

Acute Angle

An angle that measures less than 90 degrees.

Obtuse Angle

An angle that measures more than 90 degrees, but less than 18…

a point

a line

a line segment

intersecting lines

a point is an exact position

is a set of points that is endless in both directions

is a part of a line with two endpoints

are two lines that cross at one point

a point

a point is an exact position

a line

is a set of points that is endless in both directions

right angle

obtuse angle

straight angle

complimentary angles

angle that measures exactly 90 degrees.

angle that is >90 degrees and <180 degrees.

angle that measures exactly 180 degrees.

Angles whose measure adds up to 90 degrees.

right angle

angle that measures exactly 90 degrees.

obtuse angle

angle that is >90 degrees and <180 degrees.

2 angles that sum up to 180°

2 angles that sum up to 90°

Angles that are next to each other

Opposite angles that are formed by lin…

Supplementary Angles

Complementary Angles

Adjacent Angles

Vertical Angles

2 angles that sum up to 180°

Supplementary Angles

2 angles that sum up to 90°

Complementary Angles

vertex

complementary angles

supplementary angles

vertical angles

a point where two or more straight lines meet.

two angles whose sum is 90 degrees

two angles whose sum is 180 degrees

a pair of opposite congruent angles formed by intersecting li…

vertex

a point where two or more straight lines meet.

complementary angles

two angles whose sum is 90 degrees

Vertical Angles

Adjacent Angles

Complementary Angles

Supplementary Angles

Angles opposite one another at the intersection of two lines.…

Angles that have a common side and a common vertex (corner po…

Two angles whose sum is 90 degrees

Two angles whose sum is 180 degrees

Vertical Angles

Angles opposite one another at the intersection of two lines.…

Adjacent Angles

Angles that have a common side and a common vertex (corner po…

Line

Line Segment

Ray

collinear points

a collection of points that goes on forever in both directions

a line that has two endpoints

a line that has one endpoint and continues on forever in the…

Points that lie on the same line

Line

a collection of points that goes on forever in both directions

Line Segment

a line that has two endpoints

Adjacent angles

Vertical angles

Supplementary angles

Complementary angles

common vertex, common side, do not overlap

two lines intersect, two pairs of opposite angles are formed.…

two or more angles that add up to 180 degrees

two or more angles that add up to a right angle, 90 degrees

Adjacent angles

common vertex, common side, do not overlap

Vertical angles

two lines intersect, two pairs of opposite angles are formed.…

congruent angles

adjacent angles

complementary angles

supplementary angles

two angles that have the same measures

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

two angles whose measures have a sum of 90 degrees

two angles whose measures sum to 180 degrees

congruent angles

two angles that have the same measures

adjacent angles

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

alternate ext angl

alternate inter angles

consecutive inter angl

corresponding angl

out side the two lines across from each other

in side the two lines and across from each other

the pair of angles on one side of the transversal but inside…

are the ones at the same location at each intersection

alternate ext angl

out side the two lines across from each other

alternate inter angles

in side the two lines and across from each other

Interior Angle

Lines of symmentry

Non-Collinear

Quadrilateral

Angles are on the inside of of a figure.

Line through a figure such that when the figure is folded alo…

Three points that are nor on the same line.

A closed figure with four sides.

Interior Angle

Angles are on the inside of of a figure.

Lines of symmentry

Line through a figure such that when the figure is folded alo…

Acute Angle

Right Angle

Obtuse Angle

Straight Angle

The acute angle is the small angle which is less than 90°

90 degree angle

The obtuse angle is the smaller angle. It is more than 90° an…

an angle of 180°

Acute Angle

The acute angle is the small angle which is less than 90°

Right Angle

90 degree angle

right angle

obtuse angle

straight angle

vertex

An angle that measures exactly 90 degrees.

An angle that is >90 degrees and <180 degrees.

An angle that measures exactly 180 degrees.

A point where two or more straight lines, rays or line segmen…

right angle

An angle that measures exactly 90 degrees.

obtuse angle

An angle that is >90 degrees and <180 degrees.

Same side interior angles

Alternate interior angles

Corresponding angles

Transversal

Two angles between two lines and on the same side of a third…

Angles between a pair of lines that switch sides of a third i…

Angles the same side of two lines and on the same side of a t…

A line that intersects two or more other lines

Same side interior angles

Two angles between two lines and on the same side of a third…

Alternate interior angles

Angles between a pair of lines that switch sides of a third i…

How do you tell if the angles are para…

transversal

vertical angles

corresponding angles

the consecutive interior angles add up

the line in-between the parallel angles

opposite each other

How do you tell if the angles are para…

the consecutive interior angles add up

transversal

the line in-between the parallel angles

Adjacent Angles

Complementary Angles

Supplementary Angles

Linear Pair

2 angles that have a common side and vertex.

Either of 2 angles which are equal to 90 degrees

Either of 2 angles which are equal to 180 degrees

2 angles next to each other that add up to 180 degrees

Adjacent Angles

2 angles that have a common side and vertex.

Complementary Angles

Either of 2 angles which are equal to 90 degrees

linear pair

alternate interior angle

alternate exterior angle

corresponding angles

a pair of adjacent (next to each other) supplementary angles…

when 2 lines are crossed by another lie and the pair of angle…

when 2 lines are crossed by another line and there are a pair…

angles at the same location at each intersection

linear pair

a pair of adjacent (next to each other) supplementary angles…

alternate interior angle

when 2 lines are crossed by another lie and the pair of angle…

right angle

obtuse angle

straight angle

complimentary angles

angle that measures exactly 90 degrees.

angle that is >90 degrees and <180 degrees.

angle that measures exactly 180 degrees.

Angles whose measure adds up to 90 degrees.

right angle

angle that measures exactly 90 degrees.

obtuse angle

angle that is >90 degrees and <180 degrees.

Acute Angle

Obtuse Angle

Right Angle

Straight Angle

a small angle that is less than 90 degrees

An angle between 90 and 180 degrees

an angle that measures 90 degrees

an angle that measures 180 degrees

Acute Angle

a small angle that is less than 90 degrees

Obtuse Angle

An angle between 90 and 180 degrees