This is a picture to represent "concept". This icon is made by starting with a square. Inside the square are two double sided arrows. One on the left hand side and one at the bottom. There is a light bulb in the image on the top right hand side boxed in by the arrows.
This is the Concept icon for Windows 10
. Here we go. Optimized for 32x32 px, these are the simplest icons in the line style. Downloadable formats are PNG and SVG, among others. Icons8 icon pack is unique in providing a huge number of icons designed by the same team of four designers who create the new icons every working day in the same style and with the same quality. Same cool as the Bat Face, huh.