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Proposition: Prop. 11.26: Construction of Solid Angle equal to Given Solid Angle

Euclid's Formulation

To construct a solid angle equal to a given solid angle on a given straight line, and at a given point on it.

• Let $AB$ be the given straight line, and $A$ the given point on it, and $D$ the given solid angle, contained by the rectilinear angles $EDC$, $EDF$, and $FDC$.
• So, it is necessary to construct a solid angle equal to the solid angle $D$ on the straight line $AB$, and at the point $A$ on it.

Modern Formulation

(not yet contributed)

Table of Contents

Proofs: 1

Mentioned in:

Proofs: 1

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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