ideal point

noun

, Mathematics.

1. the point at infinity in projective geometry at which parallel lines intersect.

Word History and Origins

Origin of ideal point¹

First recorded in 1875–80

Example Sentences

If you know you will need a break halfway to your favorite leaf-peeping spot, find the ideal point on the Geocaching map and scope out the area for available caches.

From Popular-Science

Justice is the dead-point in a series of acts—the ideal point at which contrary forces neutralize each other to produce inertia.

From Project Gutenberg

Yet at the same time a place in the crowd constitutes an ideal point of view.

From Project Gutenberg

It follows that any two lines belonging to an ideal point can be used as the pair of guiding lines in the definition.

From Project Gutenberg

An ideal point is said to be coherent with a plane, if any of the lines composing it lie in the plane.

From Project Gutenberg

An ideal point is termed proper, if the lines composing it intersect; otherwise it is improper.

From Project Gutenberg