Geometry

2. The line that divides something into two equal parts
4. 90 degrees
10. a closed, two-dimensional shape which has four straight sides.
13. an object moves but maintains its shape and size
15. make some changes in any given geometric shape
16. two lines in the same plane that are at equal distance from each other and never meet

1. the point at which the perpendicular bisectors of the sides of a triangle intersect
3. When two or more lines cross each other in a plane
5. a mirror image of the shape.
6. a line that passes through two lines in the same plane at two distinct points
7. middle point of a line segment
8. the quality of being made up of exactly similar parts facing each other or around an axis
9. moves every point of a figure or space by the same distance in a given direction.
11. a motion of a certain space that preserves at least one point.
12. same shape and size
14. the length of the line through the center that touches two points on the edge of the circle