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Howard Geometry 7
Chapter 7 Geometry Vocabulary
| Term | Definition |
|---|---|
| Enlargement | A type of dilation with the larger image than original |
| Reduction | a type of dilation with the smaller image than original |
| Triangle | The sum of the interior angles of this figure is 180 degrees |
| Quadrilateral | The sum of the interior angles of this figure is 360 degrees |
| Midsegment | A segment that connects two midpoints of a triangle. |
| Dilation | A transformation that does not change the shape, but proportionally changes the size. |
| Transformation | The operation, or set of instructions, that maps a figure onto an image. |
| Reflection | A transformation in which a figure is flipped about a given line or axis |
| Rotation | A transformation in which a figure is turned about a fixed point. |
| Similar Figures | Figures that have congruent angles and proportional sides. |
| Congruent Figures | Figures that have congruent angles and congruent sides. |
| Ratio | A comparison between two numbers using division |
| Proportion | An equation that sets two fractions equal to each other |
| Scale Factor | The ratio held between two similar figures |
| Image | The figure after a dilation has occurred. |
| Vertex | The point where two sides of a polygon meet. |