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Geometry ch 2 + 3
| Term | Definition |
|---|---|
| transversal | a line that intersects 2 or more lines |
| linear pair | two adjacent angles that are supplementary; non-shared sides form opposite rays |
| adjacent angles | two angles that share a side |
| supplementary angles | two angles that add up to 180 degrees |
| perpendicular lines | intersect at 90 degrees |
| transformation | an operation on a point or image (set of points) to create a new point or image |
| preimage | original image |
| image | image created from transformation |
| rigid motion transformation | does not change an image's size or its shape; length and angle measures are preserved |
| reflection | transformation that reflects each point in the preimage across a line of reflection |
| rotation | transformation that rotates each point in the preimage about a point P by an angle measure of x degrees |
| center of rotation | P; point a preimage is rotated about |
| angle of rotation | degrees a preimage is rotated by |
| composition | a combination of two or more rigid motion transformations |
| glide reflection | 1 translation and one reflection |