| Term | Definition |
|---|---|
| complementary angles | two angles with a sum of 90 degrees. |
| congruent | two figures that have lengths and angle measurements of the same size |
| equilateral triangle | a triangle that has all three sides congruent. |
| isosceles triangles | triangles that have at least two congruent sides |
| parallelogram | a figure that is a quadrilateral with both pairs of opposite sides parallel and opposite sides congruent |
| reflection | a type of transformation involving a flip of the graphed figure |
| rhombus | a quadrilateral that has opposite sides parallel, all four sides congruent, and not all angles equal |
| scalene triangle | triangles that have no congruent sides |
| similar | figures that have congruent corresponding angles and proportional corresponding sides |
| supplementary angles | two angles with a sum that equals 180 degrees |
| transformation | a change in position, size, or shape of a figure on a coordinate plane. |
| translation | a type of transformation involving a slide of the graphed figure |
| trapezoid | a quadrilateral with exactly one set of parallel sides |
| proportion | an equation that states that two ratios are equal |
| corresponding angles | have the same position in two different similar figures and are congruent |
| ratio | a comparison of two numbers |
| corresponding sides | have the same position in two different similar figures and are proportional |
| unit cost | the cost for one unit of measure |
| cross products | a method that can be used to determine if two ratios are equal |