| A | B |
|---|
| What are two lines that cross but do not form right angles? | intersecting lines |
| A dot used to mark an exact location | point |
| Only a small part of a line, it has two end points | line segment |
| Lines that run from top to bottom or north and south | vertical lines |
| A straight path made up of points that extend in both directions | line |
| Two lines that cross and form right angles | perpendicular lines |
| Units of measurement used in measuring angles and temperature | degrees |
| A tool used for drawing or measuring angles | protractor |
| An angle having exactly 90 degrees | right angle |
| The common point in an angleWhere two rays meet to form the angle | vertex point |
| Two lines that are always equal distance apart at all points, these lines will never cross or intersect | parallel lines |
| Lines that run left to right or east to west | horizontal lines |
| This has only one endpoint and one arrow, as it extends in only one direction | ray |
| A flat surface formed by points that extend in all directions | plane |
| The space formed when two rays come together at a common point | angle |
| This has a measurement of 180 degrees | straight line |
| An angle that measures between 91 and 179 degrees | obtuse angle |
| An angle that measures between 1 and 89 degrees | acute angle |
