straight line

Definitions of straight line
1

n a line traced by a point traveling in a constant direction; a line of zero curvature

“the shortest distance between two points is a straight line
Antonyms:
curve, curved shape
the trace of a point whose direction of motion changes
Types:
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perpendicular
a straight line at right angles to another line
asymptote
a straight line that is the limiting value of a curve; can be considered as tangent at infinity
tangent
a straight line or plane that touches a curve or curved surface at a point but does not intersect it at that point
secant
a straight line that intersects a curve at two or more points
radius
a straight line from the center to the perimeter of a circle (or from the center to the surface of a sphere)
diameter
a straight line connecting the center of a circle with two points on its perimeter (or the center of a sphere with two points on its surface)
chord
a straight line connecting two points on a curve
element
a straight line that generates a cylinder or cone
bias, diagonal
a line or cut across a fabric that is not at right angles to a side of the fabric
diagonal
(geometry) a straight line connecting any two vertices of a polygon that are not adjacent
vector
a straight line segment whose length is magnitude and whose orientation in space is direction
element of a cone
a straight line joining the apex and a point on the base
element of a cylinder
a straight line running the length of the cylinder
ray
(mathematics) a straight line extending from a point
Type of:
line
a length (straight or curved) without breadth or thickness; the trace of a moving point

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