# Study sets matching "line pairs"

acute angle

obtuse angle

straight angle

vertex

measures less than 90 degrees

an angle that measures greater than 90 degrees and less than 1…

an angle that measures 180 degrees

The common endpoint of an angle

acute angle

measures less than 90 degrees

obtuse angle

an angle that measures greater than 90 degrees and less than 1…

Linear Pair or supplementary

Vertical Angles

Corresponding Angles

Alternate Interior Angles

Two adjacent angles that form a straight line. The angles sum…

Two angles formed by intersecting lines that are not adjacent.…

An angle pair created by a transversal where the angles lie in…

An angle pair created by a transversal where the angles lie on…

Linear Pair or supplementary

Two adjacent angles that form a straight line. The angles sum…

Vertical Angles

Two angles formed by intersecting lines that are not adjacent.…

Complementary Angles

Supplementary Angles

Perpendicular Lines

Parallel Lines

angles that add up to 90 degrees, do not have to be adjacent

two angles that add up to 180 degrees, do not have to be adjac…

lines that intersect and form right angles

two lines that never intersect, but are coplanar

Complementary Angles

angles that add up to 90 degrees, do not have to be adjacent

Supplementary Angles

two angles that add up to 180 degrees, do not have to be adjac…

Coplanar lines

Intersecting lines

Perpendicular lines

Parallel lines

lines on the same line

lines that intersect ... (likes an "X")

Lines at 90 degrees... (90 degree angles)

lines that NEVER intersect

Coplanar lines

lines on the same line

Intersecting lines

lines that intersect ... (likes an "X")

alternate interior

same side interior

corresponding

vertical

ANGLES C AND B ARE?

ANGLES B AND D ARE?

ANGLES B AND A ARE?

ANGLES C AND A ARE?

alternate interior

ANGLES C AND B ARE?

same side interior

ANGLES B AND D ARE?

alternate interior

same side interior

corresponding

vertical

ANGLES C AND B ARE?

ANGLES B AND D ARE?

ANGLES B AND A ARE?

ANGLES C AND A ARE?

alternate interior

ANGLES C AND B ARE?

same side interior

ANGLES B AND D ARE?

Vertical Angles

Corresponding Angles

Alternate Interior Angles

Same Side Interior Angles

Opposite angles formed by the intersection of two lines

When two lines are cut by a transversal, these angles lie on t…

When two lines are cut by a transversal, these angles lie on o…

When two lines are cut by a transversal, these angles lie on t…

Vertical Angles

Opposite angles formed by the intersection of two lines

Corresponding Angles

When two lines are cut by a transversal, these angles lie on t…

complementary angles

supplementary angles

corresponding angles

alternate interior angles

add up to 90 degrees

2 angles next to each other on a straight line

these angles "slide" along the transversal

on the inside of the parallel lines, on opposite sides of the…

complementary angles

add up to 90 degrees

supplementary angles

2 angles next to each other on a straight line

Parallel lines

skew lines

parallel planes

perpendicular plane

lines that are coplanar but do not intersect.

two lines that are not Coplanar and do not intersect

two planes that do not intersect "bookshevels"

meet at the right angle

Parallel lines

lines that are coplanar but do not intersect.

skew lines

two lines that are not Coplanar and do not intersect

you can infer a line is parallel when

a.

b.

c.

...

**corresponding angles**(off of different transversals) are con…

**alternate exterior angles**(off of different transversals) ar…

**alternate interior angles**(off of different transversals) ar…

you can infer a line is parallel when

...

a.

**corresponding angles**(off of different transversals) are con…

Parallel Lines

Skew Lines

Parallel Planes

Parallel Postulate

Are coplanar and don't intersect (Ex: Railroad Tracks)

Not coplanar and don't intersect (Ex: Highway Overpass)

Two planes that do not intersect (Ex: Floors of a building)

If there is a line and a point not on the line, then there is…

Parallel Lines

Are coplanar and don't intersect (Ex: Railroad Tracks)

Skew Lines

Not coplanar and don't intersect (Ex: Highway Overpass)

Complementary Angles

Supplementary Angles

Perpendicular Lines

Parallel Lines

angles that add up to 90degrees, do not have to be adjacent

two angles that add up to 180degrees, do not have to be adjace…

two intersecting lines to form right angles

two lines that never intersect, but are on the same plane

Complementary Angles

angles that add up to 90degrees, do not have to be adjacent

Supplementary Angles

two angles that add up to 180degrees, do not have to be adjace…

Parallel Lines

Skew Lines

Parallel Planes

Transversal

Coplanar lines that do not intersect

Lines that do not intersect and are not coplanar

Two planes that do not intersect

a line that intersects two or more coplanar lines at different…

Parallel Lines

Coplanar lines that do not intersect

Skew Lines

Lines that do not intersect and are not coplanar

parallel lines

intersecting lines

coincident lines

skew lines

lines in the same plane that never intersect

lines that cross at exactly one point

Two lines that have all their points in common

Lines that do not intersect and are not coplanar

parallel lines

lines in the same plane that never intersect

intersecting lines

lines that cross at exactly one point

Intersecting Lines

Parallel Line

Perpendicular Lines

Skew Lines

Have only one point in common

Never touch and lie on the same plane

Intersect forming right angles

Never touch and do not lie in the same plane

Intersecting Lines

Have only one point in common

Parallel Line

Never touch and lie on the same plane

Corresponding angles postulate

Converse of corresponding angles postul…

Alternate interior angles postulate

Converse of alternate interior angles p…

If two parallel lines are cut by a transveral, then correspond…

If two lines are cut by a transversal and corresponding angles…

If two parallel lines are cut by a transversal , then alternat…

If two lines are cut by a transversal and alternate interior a…

Corresponding angles postulate

If two parallel lines are cut by a transveral, then correspond…

Converse of corresponding angles postul…

If two lines are cut by a transversal and corresponding angles…

Parallel lines

||

Skew lines

Parallel planes

Two lines that do not intersect and are coplanar

Sign that means "parallel"

Two lines that do not intersect and are not coplanar

Two planes that do not intersect

Parallel lines

Two lines that do not intersect and are coplanar

||

Sign that means "parallel"

Corresponding Angles Postulate

Alternate Interior Angles Thm

Consecutive Interior Angles Thm

Alternate Exterior Angles Thm

If lines are parallel, then corresponding angles are congruent…

If lines are parallel, then alternate interior angles are cong…

If lines are parallel, then consecutive interior angles are su…

If lines are parallel, then alternate exterior angles are cong…

Corresponding Angles Postulate

If lines are parallel, then corresponding angles are congruent…

Alternate Interior Angles Thm

If lines are parallel, then alternate interior angles are cong…

perpendicular

perpendicular bisector

adjacent angles

angle bisector

any two lines, segments, or rays that intersect at a 90 degree…

a line, segment, or ray that passes through or stops on the mi…

two angles that are next to each other and share a common ray

a ray that splits an angle into two congruent angles

perpendicular

any two lines, segments, or rays that intersect at a 90 degree…

perpendicular bisector

a line, segment, or ray that passes through or stops on the mi…

you can infer a line is parallel when

a.

b.

c.

...

**corresponding angles**(off of different transversals) are con…

**alternate exterior angles**(off of different transversals) ar…

**alternate interior angles**(off of different transversals) ar…

you can infer a line is parallel when

...

a.

**corresponding angles**(off of different transversals) are con…

Parallel lines

Skew lines

Parallel Planes

Transveral

Coplanar lines that do NOT intersect

Lines that do not intersect and are not coplanar

Planes that do not intersect

Aline that intersects 2 or more coplanar lines at 2 different…

Parallel lines

Coplanar lines that do NOT intersect

Skew lines

Lines that do not intersect and are not coplanar

Parallel Lines

Perpendicular

Skew Lines

Parallel Planes

Lines that do not intersect and are on the same plane (coplana…

Lines that intersect at a right angle

Lines that do not intersect and are not on the same plane (cop…

Planes that do not intersect

Parallel Lines

Lines that do not intersect and are on the same plane (coplana…

Perpendicular

Lines that intersect at a right angle

0 =

4 =

2 =

3 =

south line north line... cynwyd n/a

south line north line... air port line warminster line

south line North line... wilington/ Newark Manyunk Norristown line

south line North line... Media / elwyn line West Trenton line

0 =

south line north line... cynwyd n/a

4 =

south line north line... air port line warminster line