GEOMETRY: BASIC TERMS
- Point (punto)
−
A point is the place where two
lines intersect.
−
In
geometry, a point has no dimension
−
We
represent a point with a dot.
−
We identify this point with a
CAPITAL letter.
- Line (línea)
−
A line is made up of infinite
points.
−
It has not endpoints and
continues endlessly on a plane.
−
These lines are named with
small letters such r ,s, t...
- Ray (semirrecta)
−
A ray is a
"straight" line that begins at a certain point and extends forever in
one direction.
−
The point where the ray begins
is known as its endpoint.
- Line segment (segmento)
−
A line segment is a portion of
a "straight" line.
−
A line segment does not extend
forever, but has two endpoints.
− The point halfway between the endpoints of a line segment is called the
midpoint. A midpoint divides a line segment into two equal segments.
- Intersection
−
The term intersect is used
when lines, ray lines or segments share a common point.
−
The point they share is called
the point of intersection.
And here you can find a video explaining the differences between line, line segment and ray.
