Line
In common language it is a long thin mark made by a pen, pencil, etc.
In Geometry a line:
• is straight (no bends),
• has no thickness,
• and extends in both directions without end (infinitely).
One end makes it a "Ray", and two ends makes it a "Line Segment".
Try moving points A and B:
See: Line Segment
- ordinal number
- ordinary differential equation
- ordinate
- origin
- origin symmetry
- orthocenter
- orthogonal
- oscillating series
- ounce
- outcome
- outlier
- oval
- ovoid
- pair
- palindrome
- palindromic numbers
- parabola
- paraboloid
- parallel
- parallel lines
- parallel planes
- parallelepiped
- parallelogram
- parameter
- parametric equations