irregular polygonal square background - triangle low poly pattern - blue, green, turquoise, cerulean, aqua, and te

acute and aqua art background banner blank blue cerulean colored colour crystal cubism design diamond fraction fractional fragment geometric geometrical geometry gradient green grid illustration irregular low lowpoly mesh modern mosaic multi multicolored network origami pattern poly polygon polygonal shape sharp square structure tessellated tessellating tessellation triangle triangular turquoise varicolored variegated vector wallpaper