| A | B |
|---|
| Adjacent Angles | angles that share a common vertex and side.(drawing) |
| Alternate Intetior | angles between the parallel lines and on alternate sides of the transversal. (drawing) |
| Complementary Angles | angles whose measures sum 90 degrees. (drawing) |
| Corresponding Angles | pairs of nonadjacent angles that lie on the same side of a transversal of two lines and in corresponding positions. (drawing) |
| Parallel Lines | lines that lie in the same plane but do not intersect. (drawing) |
| Perpendicular Lines | lines that intersect to form right angles. (drawing) |
| Supplementary Angles | angles whose sum is 180 degrees. (drawing) |
| Transversal | a line that intersects two other lines in different points. (drawing) |
| Vertical Angles | angles opposite of one another. (drawing) |
| Angle Bisector | a ray that divides a given angle into two congruent angles, each half the size of the given angle. |
| Central Angle | an angle whose vertex is the center of a circle. |
| Congruent Angles | angles that have the same measure. |
| Line of Symmetry | a line that divides a figure with reflectional symmetry into two congruent halves. |
| Polygon | a colose plane figure with at least three sides. |
| Reflection | a transformation that flips a figure over a line of reflection. |
| Regular Polygon | a polygon with all its sides congruent and all its angles congruent. |
| Rotation | a transformation that turns a figure about a fixed point, called the center of rotation. |
| Skew | lines in space that do not intersect and are not parallel. |
| Transformation | a change of position or size of a figure. |
| Translation | a transformation that moves points the same distance and in the same direction. |
