Question | Answer |
acute angle | angle measuring less than 90 degrees |
angle | two rays connected by their endpoints |
angle bisector | cuts an angle into congruent angles |
collinear points | points that lie on the same line |
congruent angles | angles that have the same measure |
congruent segments | segments that have the same length |
conjecture | conclusion reached by inductive reasoning |
coordinate | a point's distance from the origin on the number line |
coplanar | when points are on the same plane |
counterexample | something that disproves a conjecture |
inductive reasoning | reasoning based on observed patterns |
line | a series of points that extend in two directions without end |
midpoint | point that divides the segment into two congruent segments |
obtuse angle | a angle that measures above 90 degrees and less than 180 degrees |
opposite rays | rays that start at the same point but go in opposite directions |
parallel lines | lines that lie on the same plane and do not intersect |
perpendicular lines | lines that intersect from right angles |
plane | a flat surface that has no thickness |
point | has no size but has a position |
postulate | an accepted statement of fact |
ray | the part of a line consisting of one endpoint |
right angle | an angle measuring 90 degrees |
segment | the part of a line consisting of two endpoints |
skew lines | noncoplanar lines that never intersect and are not parallel |
space | the set of all points |
plane | a flat surface that has no thickness |
point | has no size but has a position |
postulate | an accepted statement of fact |
ray | the part of a line consisting of one endpoint |
right angle | an angle measuring 90 degrees |
segment | the part of a line consisting of two endpoints |
skew lines | noncoplanar lines that never intersect and are not parallel |
space | the set of all points |