Rectangular chandeliers use the basic geometric forms of squares and rectangles to illuminate rooms that require a precise, almost mathematical, look. These hanging, ceiling or suspender fixtures best match modern, Mid-Century, contemporary or industrial design motifs. They normally use multiple, metallic arms to display light in a variety of patterns. But they also come in a wide selection of colors, finishes and textures to produce very different vibes for a variety of spaces and styles. Energy-efficient technology also makes many of these dramatic fixtures eco-friendly, too.