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Unit 2 vocabulary.
Vocabulary
Question | Answer |
---|---|
Acute Angles | Less than 90 degrees. |
Congruent Angles | Angles that have the same measurement. |
Coplanar | Points and lines in the same plane are coplanar. |
Midpoint | a point that divides a segment into ntwo congruent segments. |
Perpendicular lines | lines that intersect to form right angles. |
ray | a ray is part of a line that consists of an initial point and all point on the line that lies on one side of the inital points. |
Space | is the boundless three-dimensional set of all points. |
Angle | two rays that are connected at their end points. |
Congruent segmants | two segments with the same length. |
Counterexample | an example that prove an conjecture is false |
Obtuse Angle | More than 90 degrees |
plane | a plane is a flat surface that has no thickness. it extends without ending all directions. |
Right angle | exactly 90 degrees |
Angle bisector | ray that divides an angle into two congtrnt angles |
Conjecture | is a conclusion reaches by using inductive reasoning |
inductive reasoning | is a type of reasioning that reaches conclutions based on a patteren of spefic examples or past events |
opposite rays | start at the same point and give in opposite directions. |
point | a point has no length, width, or thickness. it extends without end in two directions. |
segements | is part of a line consisting of two points called end points |
collinear points | points that lie on the same line |
coordinate | of a point is its distance and direction |
line | undefined |
parallel lines | Parallel lines are copalanr lines that do not intersect. |
postulate | a statement accepted to be true without proof |
skew lines | are non conplanar lines. Therefore, they are not parallel and mdo not iontersect. |