Definition:Hyperbola/Vertex

Parts of Hyperbola

 

Let $K$ be a hyperbola.

Each of the points where $K$ intersects the major axis of $K$ is known as a vertex of $K$.

In the above diagram, $V_1$ and $V_2$ are the vertices of $K$.

Also see

• Definition:Covertex of Hyperbola

• Results about vertices of conic sections can be found here.

Linguistic Note

The plural of vertex is vertices.

The word vertex is Latin for peak, from which the irregular plural form.

Sources

• 1933: D.M.Y. Sommerville: Analytical Conics (3rd ed.) ... (previous) ... (next): Chapter $\text {V}$. The Hyperbola: $2$.
• 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): hyperbola
• 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): hyperbola
• 2014: Christopher Clapham and James Nicholson: The Concise Oxford Dictionary of Mathematics (5th ed.) ... (previous) ... (next): hyperbola
• 2014: Christopher Clapham and James Nicholson: The Concise Oxford Dictionary of Mathematics (5th ed.) ... (previous) ... (next): vertex