# Trisecting the Angle/Cissoid of Diocles

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## Theorem

Let $\alpha$ be an angle which is to be trisected.

This can be achieved by means of a cissoid of Diocles.

## Construction

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## Proof

This theorem requires a proof.You can help $\mathsf{Pr} \infty \mathsf{fWiki}$ by crafting such a proof.To discuss this page in more detail, feel free to use the talk page.When this work has been completed, you may remove this instance of `{{ProofWanted}}` from the code.If you would welcome a second opinion as to whether your work is correct, add a call to `{{Proofread}}` the page. |

## Also see

## Historical Note

The technique of trisecting an angle by means of the cissoid of Diocles was used by Diocles of Carystus.

## Sources

- 1986: David Wells:
*Curious and Interesting Numbers*... (previous) ... (next): $3$ - 1997: David Wells:
*Curious and Interesting Numbers*(2nd ed.) ... (previous) ... (next): $3$