plane geometry

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noun Mathematics.

the geometry of figures whose parts all lie in one plane.

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His boss, whom he admires, is waiting to meet with him about the big project.

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Origin of plane geometry

First recorded in 1740–50

Words nearby plane geometry

Planck's law, Planck's radiation law, plane, plane angle, plane chart, plane geometry, plane iron, planeload, plane of incidence, plane polarization, planer

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use plane geometry in a sentence

Chérif was arrested in Paris in January 2005 as he was about to board a plane to Damascus along with a man named Thamer Bouchnak.
France Mourns—and Hunts|Nico Hines, Christopher Dickey|January 8, 2015|DAILY BEAST
As we waited for my plane to come in, we stayed silent for a long time.
The Story Behind Lee Marvin’s Liberty Valance Smile|Robert Ward|January 3, 2015|DAILY BEAST
And then I got on a plane, and guess what was playing: I Never Sang for My Father.
The Story Behind Lee Marvin’s Liberty Valance Smile|Robert Ward|January 3, 2015|DAILY BEAST
“Call me when the plane leaves the ground,” she said, in a tone that implied she knew her husband well.
Mario Cuomo, a Frustrating Hero to Democrats, Is Dead at 82|Eleanor Clift|January 2, 2015|DAILY BEAST

On Monday, Soelistyo had jolted relatives as well as searchers by suggesting that the plane could be “at the bottom of the sea.”
Wreckage, Bodies of AirAsia Crash Found|Lennox Samuels|December 30, 2014|DAILY BEAST
The sequestered spot, a seat beneath a plane tree, with a lonesome arc-lamp shining full upon it, was occupied.
The Joyous Adventures of Aristide Pujol|William J. Locke
Hence the latter is not level, but has, in places, steps which have been worn to an inclined plane.
The Catacombs of Rome|William Henry Withrow
Therefore the families were strong, united, sound, resisting the storm like a line of plane trees!
Frdric Mistral|Charles Alfred Downer
Then he shaved this side of the block, then the other side, with a plane, a tool with a very sharp edge.
Seven O'Clock Stories|Robert Gordon Anderson
Here was another plane of existence where the machinations of men seemed to matter little.
Mystery Ranch|Arthur Chapman

British Dictionary definitions for plane geometry

plane geometry

noun

the study of the properties of and relationships between plane curves, figures, etc

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for plane geometry

plane geometry

The mathematical study of geometric figures whose parts lie in the same plane, such as polygons, circles, and lines.

Cultural definitions for plane geometry

plane geometry

The study of two-dimensional figures (figures that are confined to a plane).

notes for plane geometry

Plane geometry is one of the oldest branches of mathematics.

notes for plane geometry

The Greek mathematician Euclid was the first to study plane geometry carefully. His book Elements was the standard plane geometry textbook for centuries.