Naming geometric building blocks
Geometry has four special building blocks: points, lines, line segments, and rays. Let's meet each one.
First, a point. A point marks one exact spot. It has no size — just a position.
We name a point with a capital letter. This is point A.
Next, a line. A line is perfectly straight and goes on forever in both directions.
We draw arrows on both ends to show it keeps going forever.
Pick any two points on it — like B and C — and we can call it line BC.
A line segment is just a piece of a line. It has two endpoints — a clear start and stop.
With endpoints D and E, this is segment DE.
A ray starts at one point and goes on forever in only one direction — like a beam of light.
It starts at F and shoots out through G, so we call it ray FG. The starting point always comes first!
Here they all are side by side: point, line, segment, and ray.
Points, lines, segments, and rays — the building blocks behind every shape in geometry. Great work!