All Octicons
triangle-down
Octicon sizes navigation
React
import {TriangleDownIcon} from '@primer/octicons-react' <TriangleDownIcon size={16} />
Rails
<%= render(Primer::Beta::Octicon.new(:"triangle-down", size: :small)) %>
Jekyll
{% octicon triangle-down height:16 %}
Figma
This icon is called triangle-down
in Primer's Octicons library.