Texas Math Models

Try “number line” or “4.5D”

Points, lines and rays

4.6A, said plainly

G4

Four things to name before you can talk about an angle.Apointlineline segmentraya ray has ONE endpoint; two of them make an angleparallelnever meetperpendicularmeet at a right angleboth describe a PAIR of lines, never one on its owna line runs on forever; a segment stops at both ends; a ray stops at one

How this one works

How

a line goes on forever, a segment stops at both ends, a ray stops at one.

Best when

a question uses one of these words and you need to be sure which.

The same problem, other ways