Crisp geometrics shape decor for fall.

• Author: Cook, Kim
• Position: Living

Byline: Kim Cook

Quadrilaterals, cubes, polyhedrons ... sound like 10th grade math class?

Perhaps, but they're also examples of one of this fall's biggest trends in home decor. Crisp, contemporary and pleasing to the eye, geometrics work well for tables, lighting, accessories and soft furnishings.

Nate Berkus is a fan of these modern motifs, as his fall collection at Target attests. One of his favorites is a wall-mounted art piece made of hexagonal metal. His inspiration came out of a trip to a gem and mineral show, where he saw a table of crystallized honeycombs.

''They were breathtaking,'' he said.

A series of polyresin marble trays are emblazoned with a scattering of rhombuses. Check out the zig-zagged enamel photo frames here as well. (www.target.com)

Restoration Hardware's curated ''Curiosities'' collection includes some Belgian ''maquettes'' -- wooden scale models used to teach architecture. The large polygonal star or pyramidal cone would make a striking accessory. (www.restorationhardware.com)

Canadian design duo Gabriel Kakon and Scott Richler have created the Welles light fixture, a cluster of blackened steel polygons with interiors available in nickel, brass or copper. (www.gabrielscott.com)

Also in lighting, Seattle-based design house Iacoli and McAllister offers open-framed rhomboid pendants, available in different configurations, crafted in metallics as well as fun, powder-coated colors like tomato, blue and white. (www.iacolimcallister.com)

Ridgely, a Toronto studio, welds cut steel rods into crisscross shapes on screens that can be left raw or powder-coated with several different colors. They can be used as room or landscape dividers, or as wall art. (www.ridgelystudioworks.com)

Flor.com has a range of carpet tiles that replicate graphic patterns like zigzags and rectangles. (www.flor.com)

At www.overstock.com, circles are...