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unit 2 vocabulary p


acute angle an angle whose measure is between 0 and 90
angle formed by two rays with the same endpoints
angle bisector a ray that divides an angle into two congruent angles
collinear points points on the same line
congruent angles angles that have the same measure
congruent segments segments that have the same lengths
conjecture conclusion reached by using inductive reasoning
coordinate a point by any order
coplanar figure in the same plane
counterexample a particular example or instance of the statement that makes it false
inductive reasoning type of reasoning that reaches conclusions based on patterns of specific examples or past events
line a series of points that extend in two directions without end
midpoint a point that divides a segment into two congruent segments
obtuse angle angle whose mearsure is between 90 and 80
opposite rays collinear rays with the same endpoint
parallel lines two lines are parallel if they lie in the same plane and do not intersect
perpendicular lines lines that intersect and form right angles
plane flat surface with no thickness
point a location
postulate accepted statement of fact
ray part of line consisting of one endpoint and all the points of the line on one side of the endpoint
right angle an angle whose measure is 90
segment part of a line consisting of two points and all points between them
skew lines noncoplanar line therefore, they are not parallel and do not intersect.
space set of all points
Created by: christol