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# 5.8: Distance Between a Point and a Plane

Difficulty Level: At Grade Created by: CK-12
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### Vocabulary Language: English

Dihedral Angle

Dihedral Angle

A dihedral angle is an angle between two planes in three dimensional space.
Origin

Origin

The origin is the point of intersection of the $x$ and $y$ axes on the Cartesian plane. The coordinates of the origin are (0, 0).
orthogonality

orthogonality

To be orthogonal is to be perpendicular.
Perpendicular

Perpendicular

Perpendicular lines are lines that intersect at a $90^{\circ}$ angle. The product of the slopes of two perpendicular lines is -1.
plane

plane

A plane is a flat, two-dimensional surface. It can be conceptualized as a sheet of paper of infinite area.
position vector

position vector

A position vector describes the straight-line travel between a starting point (usually the origin) and the location of a second point on a coordinate plane.

Nov 01, 2012

Jun 08, 2015