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Acute angle? Angle less than 90 degres
Angle? formed by two rays connected by the same endpoint.
Angle bisector a ray that divides an angle into two congruent angles.
collinear points lie on the same line
congruent angles angles that have the same measures
congruent segments segments with the same length
conjecture a conclusion reached by using inductive reasoning
coordinate a specific point on a number line or a plane
coplanar points and lines in the same plans
counterexample something that disproves a conjecture
inductive reasoning something that is reached through examples and the process of elimination
line has no length,width,or thickness. it extends without ending in two directions
midpoint a point that divides a segment into two congruent segments
obtuse angle angle more than 90 degrees and less than 180 degress
opposite rays start at the same point but go in opposite directions
parrelel lines coplanar lines across from each other but will never meet
perpendicular lines lines that intersect to form roght angles
plane flat surface that has no thickness. it extends without end in all directions
point no length,width,or thickness, but has a position
postulate an accepted staement of fact
ray part of a line that consists of an initial points and all points on the line that lie on one side of the initial point.
right angle 90 degree angle
segment the part of a line consisting of two points
skew lines noncoplanar lines that never intersect and are not parallel
space the set of all points
Created by: jordan825