Triangle Minimize Window 1 is a line-style Icon from Material Pro Line set.

The Triangle Minimize Window 1 icon shows a rounded window frame with a bold diagonal bar forming a triangular corner at the lower left. Drawn in the line style on a 24px grid for clear, spacious scaling. Use it for minimize-window controls, desktop interfaces, browser toolbars, and responsive layout actions. It belongs to Material Pro Line set in the Streamline Material family.