The image is a single block with an abnormal shape. The bottom is flat but the top has three different heights. Under the varying heights are numbers. Number 1 is highest. Number 2 is a little lower and number 3 is the lowest.
This Leaderboard icon is made in Material Design style
developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 5,700 icons, all in the same style and quality.