Module One Geometry One

VOCAB

point: A set location in a space represented by an uppercase letter

colinear: 3 or more points that lie on the same line

noncolinear: 3 or more points that don't lie on the same line

line: an infinite collection of numbers in two directions

line segment: a portion of a line with two distinct endpoints 

plane: a flat surface made up of at least three noncollinear points.

coplanar: 2 or more points that lie on the same plane

ray: an infinite part of a line with one endpoint (known as the initial point) and the arrow at the end (terminal)

angle: Two rays joined at a common vertex

acute angle: An angle between 0 degrees and 89 degrees

obtuse angle: An angle that measures between 91 degrees and 179 degrees

right angle:  An angle that measures exactly 90 degrees

straight angle:  An angle that measures exactly 180 degrees

adjacent angle: angles with a common vertex and side

supplementary angles: angles whose sum adds to 180 degrees

complementary angles: angles whose sum adds to 90 degrees

linear pair: 2 adjacent angles that are complementry 

congruent angles: Angles whose degrees are the same

vertical angles: two angles that are straight and create an x (only have one point of intersection)