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10 geomerty vocab
Term | Definition |
---|---|
acute angle | an angle with measure between 0 degrees and 90 degrees. |
adjacent angle | two angles with a common vertex and side but no common interior points |
angle | consists of two diffrent rays that have the same initial point |
angle bisector | a ray that divides an angle into two adjacent angles that are congruent |
collinear points | points thta lie on the same line |
congruent | having the same size and shape |
congruent angels | angles having thye sam e mesure |
coordinate | the real number that corresponds to a point on a line |
coplanar points | points that lie on the same plane |
distance | the abdolute value of the diffrence between the coordinates of the points |
equal | having the same measure |
intersect | to have one or more poins in common |
length | the distance between the andpoints of a segment |
line | extends infiniely in one dimension |
midpoint | the point that divides, or bisects a segment into two congruent segments |
obtuse angle | an angle with measure between 90 degrees and 180 degrees |
oppposite rays | two rays with the same inital point extending in oppositde directions |
plane | extends infinitely in two demensions |
point | has no dimension |
ray | part of a linethat consists of an initial point and all points on a line that extend in one direction |
right angle | an angle with measure equal to 90 degrees |
segment | part of a line that consists of two endpoints and all points between the endpoints |
segment bisector | a segment, line, ray or plane that intersects a segment as its midpoint |
skew lines | two lines that do not intersect and are not coplanar |
straight angle | an angle with measure equal to 180 degrees |
vertex of an angle | the inital point of the two rays that create the angle |
Bisect | cut in half |
definition | Uses known words to describe a new word |
Undefined Term | Words that are not formally defined, although we have a general agreement about what each word means. Examples include “point”, “line” and “plane.” |
Postulate (Axiom) | A statement whose truth is accepted without proof |
Theorem | A statement that is proved by deductive reasoning |