math

2. The point in the exact middle of a line segment.
5. The place where two lines or shapes meet or cross.
7. Points that are all on the same flat surface (like a piece of paper).
11. A part of a line that starts at one point and goes forever in one direction.
12. If three points are on a line, one point is in the middle of the other two.
13. A number that shows where a point is on a line or graph.
15. Points that are all on the same straight line.
16. A rule in geometry that we accept as true without needing to prove it.
17. Two rays that start at the same point but go in opposite directions.
18. A line, point, or shape that cuts a segment exactly in half.

1. A straight path that goes on forever in both directions.
3. Words in geometry that we can clearly explain using other known words.
4. A word in geometry that isn’t clearly defined but everyone agrees on what it means.
6. Line segments that are exactly the same length.
8. A flat surface that goes on forever in all directions, like a giant sheet of paper.
9. How far apart two points are on a line.
10. A tiny spot that shows a place in space; it has no size.
14. A part of a line that has two endpoints and includes everything between them.