Geometry terminology

5. Two or more objects that have the same shape and size, or if one has the same shape and size as the mirror image of the other.
6. The axes of a two-dimensional Cartesian system divide the plane into four infinite regions, called quadrants, each bounded by two half-axes.
7. a polygon with three sides
9. An angle that is less then 90 degrees
11. Moving without rotating, resizing or anything else.
13. a triangle with all sides different lengths
14. A coordinate system that specifies each point uniquely in a plane by a set of numerical coordinates, which are the signed distances to the point from two fixed perpendicular oriented lines, measured in the same unit of length
16. a motion of a certain space that preserves at least one point
17. a triangle with (at least) 2 sides with the same length
18. a angle that is 90 degrees
19. A regular shape having equal sides and equal angles is a regular polygon.

1. A process that manipulates a polygon or other two-dimensional object on a plane or coordinate system.
2. A type of transformation that moves a figure in the coordinate plane from one location to another.
3. a angle that is over 90 degrees
4. a type of polygon with all sides and angles the same
8. direction of an object such as a line, plane or rigid body is part of the description of how it is placed in the space it occupies.
10. The output of the original object when moved to a different area.
12. Two or more objects with the same shape, or one has the same shape as the mirror image of the other.
14. The fixed point around which a two-dimensional figure is rotated.
15. Moving without rotating, resizing or anything else.