Geometry Vocab
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Point
location in space

LINE
a series of points that extends in two opposite directions without end

Segment
Consists of two endpoint and all the points of the line between the endpoints.

Ray
consists of two endpoints and all the points of the line on one side of the endpoint.

plane
a flat surface with no thickness that extends in all directions on the surface

Intersecting lines
 lines that have exactly one point in common

parallel lines
lines that have no points in common

Skew lines
lines that are not parallel and do not intersect

Angle
a figure formed by two rays with a common endpoint.

vertex
a point of intersection of two sides of an angle of figure

degrees
a measurment used to measure angles

acute angle
measure less than 90 degrees

right angle
measure 90 degrees

obtuse angle
measure between 90 and 180 degrees

straight angle
measure 180 degrees

perpendicular lines
lines that intersect forming a right angle

complementary angles
 if the sum of two angles is 90 degree
 it is complementary

supplementary angles
any two angles that add up to 180

vertical angles
two intersecting lines

congruent angles
angles with equal measures