| A | B |
|---|
| Line | straight path in both directions with no endpoints |
| Angle | formed by two rays that have the same endpoint |
| Line Segment | a part of a line that has two endpoints |
| Ray | a part of a line that begins at one endpoint and continues in one direction |
| Point | an exact position or location |
| Right Angle | an angle that forms a square corner |
| Degree | a unit of measure used to measure angles |
| Obtuse Angle | an angle that measures greater than 90 degrees |
| Acute Angle | an angle that measures less than 90 degrees |
| Endpoints | found at the end of a line |
| Intersecting Lines | Lines that meet or cross at a point |
| Perpendicular Lines | Lines that cross to make a square corner |
| Parallel Lines | Lines that are the same distance apart an do not intersect |
| Angle | for by two rays with a common endpoint |
| Straight angle | Angle with a measure of 180 degrees |
| Isosceles Triangle | two sides are congruent |
| equilateral triangle | all sides are congruent |
| scalene triangle | no sides are congruent |
| acute triangle | 3 acute angles |
| obtuse triangle | 1 obtuse angle; 2 acute angles |
| right triangle | 1 right angle; 2 acute angles |
| vertical angles | congruent angles created when two lines intersect; share a vertex |
| complimentary angles | pairs of angles that add up to 90 degrees |
| adjacent angles | pairs of angles that share a common ray |
| supplementary angles | pairs of angles that add up to 180 degrees |
| radius | distance from the center of the circle to the edge |
| diameter | distance of a segment from one edge of the circle to the other passing through the center |
| similar shapes | shapes with the same shape but different sizes |
| congruent shapes | shapes with the same shape and size |
