| A | B |
|---|
| location in space | point |
| continues without end in opposite directions | line |
| part of a line with one endpoint | ray |
| part of a line with 2 enpoints | segment |
| points on the same line | collinear |
| lines in the same plane which do not intersect | parallel lines |
| lines in different planes which do not intersect and are not parallel | skew lines |
| two rays with a common endpoint | angle |
| 2 rays which make up an angle | sides of an angle |
| point where two rays meet to form an angle | vertex |
| angle whose measure is between 0 and 90 degrees | acute angle |
| angle whose measure is between 90 and 180 degrees | obtuse angle |
| angle whose measure is 90 degrees | right angle |
| angle whose measure is 180 degrees | straight angle |
| lines which meet at a 90 degree angle | perpendicular lines |
| angles whose sum is 90 degrees | complementary angles |
| angles whose sum is 180 degrees | supplementary angles |
| a line which intersects 2 or more parallel lines | transversal |
