◀ ▲ ▶Branches / Geometry / Elements-euclid / Book-11-elementary-stereometry / Proposition: Prop. 11.11: Construction of Straight Line Perpendicular to Plane from point not on Plane

Proposition: Prop. 11.11: Construction of Straight Line Perpendicular to Plane from point not on Plane

Euclid's Formulation

To draw a perpendicular straight line from a given raised point to a given plane.

• Let $A$ be the given raised point, and the given plane the reference (plane).
• So, it is required to draw a perpendicular straight line from point $A$ to the reference plane.

Modern Formulation

(not yet contributed)

Table of Contents

Proofs: 1

Mentioned in:

Proofs: 1 2 3 4

Thank you to the contributors under CC BY-SA 4.0!

Github:

non-Github:

@Fitzpatrick

References

Adapted from (subject to copyright, with kind permission)

1. Fitzpatrick, Richard: Euclid's "Elements of Geometry"

Adapted from CC BY-SA 3.0 Sources:

1. Prime.mover and others: "Pr∞fWiki", https://proofwiki.org/wiki/Main_Page, 2016