# Definition:Hyperbola/Transverse Axis

< Definition:Hyperbola(Redirected from Definition:Transverse Axis of Hyperbola)

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## Parts of Hyperbola

Consider a hyperbola $K$ whose foci are $F_1$ and $F_2$.

The **transverse axis** of $K$ is the line segment joining the vertices of $K$.

In the above diagram, $V_1 V_2$ is the **transverse axis** of $K$.

## Also known as

Many sources give this as the **major axis**, but at $\mathsf{Pr} \infty \mathsf{fWiki}$ the policy is to use the latter term to mean the (infinite) straight line passing through the vertices and foci of $K$.

## Also see

## Linguistic Note

The plural of **axis** is **axes**, which is pronounced **ax-eez** not **ax-iz**.

Compare basis.

## Sources

- 2014: Christopher Clapham and James Nicholson:
*The Concise Oxford Dictionary of Mathematics*(5th ed.) ... (previous) ... (next): Entry:**hyperbola**