Idea of Expand Icon
The Expand icon is made up of four arrows, the arrow head is a right angle and the shaft is a straight line. The arrows start around the center of an invisible square and the arrows point to a corner of the invisible square. The arrow heads each make a corner of the invisible square.
This Expand icon has Android KitKat style
. If you use the icons for Android apps, we recommend using our latest Material Icons icon pack (please check our sidebar on the right). Otherwise, it's a solid icon pack that looks good in small resolutions, either on the web or in print. It's characterized by thick lines, smooth corners, and is optimized for 24x24 pixels.