| A | B |
|---|
| auxiliary line | an extra line or segment drawn in a figure to help analyze |
| base angle | in an isosceles triangle, the angle formed by one congruent side, and the non-congruent side |
| congruent | same size and shape |
| corresponding parts | the parts of a polygon that relate to a congruent polygon |
| congruent polygons | shapes that are the same size and shape |
| equiangular triangle | a 3 sided polygon that has 3 congruent sides |
| equilateral triangle | a 3 sided polygon that has 3 congruent angles |
| image | the new drawing after the transformation |
| included angle | the angle formed by two adjacent sides of a polygon |
| included side | the side located between 2 consecutive angles of a polygon |
| isosceles triangle | a triangle that has 2 congruent sides |
| preimage | the original drawing before the transformation |
| reflection | a transformation also known as a flip |
| rotation | a transformation also known as a spin |
| scalene triangle | a triangle in which no sides are congruent |
| transformation | an operation that maps an original figure onto a new figure |
| translation | a tranformation also known as a slide |
