Geometry Vocabulary

3. A rigid transformation that involves flipping a figure over the line of reflection.
5. A transformation that maintains the shape of a figure but multiplies its dimensions by a chosen factor.
6. Lines that intersect at a right angle.
8. Angles that add to 90 degrees.
9. A figure can be rotated a certain degree about the center and will appear the same.
13. Maps each point of a figure to a new point so that the resulting image has the same size and shape.
14. The distance around a 2-dimensional object's exterior.
16. A diagram with fact bubbles and a conclusion bubble with justifications to prove some fact such as similar triangles.
17. Lie in the same plane and never intersect.
18. Angles that add to 180 degrees.
19. A figure can be folded on a line of symmetry where both halves of the figure will match up or line up with each other exactly.

1. Two shapes are congruent if there is a series of rigid transformations that maps one shape onto the other.
2. A rigid transformation that involves sliding a figure to a new location.
4. A sequence of rigid transformations that can include rigid transformations, dilations, or both.
7. The ratio between any pair of corresponding sides in similar figures.
9. a rigid transformation that involves turning an entire figure about a fixed point.
10. When the three sides of a right triangle are positive integers
11. Means to divide into two
12. The number of square units needed to fill up a region on a flat surface.
15. the amount each side of a figure is multiplied by when the figure is proportionally enlarged or reduced in size.