Rectangles and squares are my favorite shapes, so I love these rooms. Curves just waste space anyway.

I don't care for the weird rug in the last one. If I never see another kidney-shaped object for the rest of my life, I'll die a happy person.

I know some of us seem to detect art from etsy like others can detect furniture from Ikea (like you can smell it in the air or something), but what's your opinion on famous works of art such as the Ludwig Sanders triptychs (the yellow and green ones in the first photo) and the Morris Louis art in the last photo? To be honest, I recognized neither artist until I clicked on the page and even then, I was not familiar with the work of either artist. Having a framed print or even a canvas print of either type of work can't possibly be as much of a faux pas as having a framed Klimt (even more egregious if it's "The Kiss") right?

As a relative of Morris Louis, I love that it is in that photo. I'm clearly not objective! :-)

Those chairs in the last picture look too medical (and at the same time dangerous to a klutz like me).

R_Claw:
I've loved Morris Louis forever! I did a paper on his work when I was in high school :)

I'm not a fan of the last two pics, personally. The kidney shaped rug doesn't appeal to me and the odd sculpture (is it a clown?) seems kinda scary :)

I love everything about pic # 1 even though its a bit linear and formal for my taste.

I remember that room from Dwell in the second picture, I was actually inspired and by the painted built in and close to matching floor color I did a very similar look when I was doing freelance designing for a client.

I am a big fan of Morris Louis loved his "veil" works.

Loving pic #1 - Even tho yellow and green are my least favorite colors...
...and I really enjoy the way the kidney shaped rug in pic #4 softens an otherwise linear space - I suppose a round rug would work too with these furnishings as well but a rectangular rug simply wouldn't have the same "OOmph" that this shape provides.

Clever use of these shapes.

I love how every one of these spaces balances the use of the rectangle with curves. Without the curves, these squares would be decidedly unhip.

I prefer the visual impact of a large rectangle over the grouping of several (or many) small pieces...groupings fill up the space, but detract from the art itself. I think these photos were chosen for the shapes, rather than the color or content.

i know this post is about 4sided geometrics, but that round coffee table in the main photo is insane. i want i want

I'm not sure that I buy the deconstructed idea, here, that it's the rectangular shape that makes this work. After all, the only difference between a square and a rectangle can be millimeters, if you're going to get technical about it, or a few inches if we're talking about something you can see with the naked eye.

On the one hand, the human world is full of geometry -- perfect squares are hard to work with in real spaces -- so pointing out rectangles is kind of like pointing out air. "Yep, look, there goes that air working really well again!"

In the first photo, we've got some repetition of bold color and shape. Would it work with circles or hexagons or triangles? I think it would probably be overkill and hard to look at. This shape works, I think, because it's "invisible" to the eye. It if were circles we'd be saying "oh god, a polka dot room, get me outta here!"

In the second photo, we're bleeding bold color up the wall (or down, depending on how you look at it). Neat effect. Dependent on rectangles? I'm not so sure. Would it be cool if the color on the wall were triangular? or circular? Yes, I think it would be even cooler circular.

In the third photo we've bold contrasting color that could be achieved by painting the wall, but the accordion fold give this 3-dimensional appeal. This is the "air" argument. The wall is rectangular, but it would be hard for it not to be.

And in the fourth we're playing with scale. Could the painting be a square? Totally.

PS -- in the 4th photo we're also looking at contrast. If all the furnishings were from West Elm, a giant round mirror would provide the same visual effect.

Is the round coffee table aluminum?

The coffee table in photo#1 is to F**king die for!

i love the use of rectangles on sofa pillows or as in the
photo sofa back cushions. a rectangle makes a very
strong statement and enhances the identity of rooms.

nicely done.

I love that trippy coffee table in the first picture - the reflections would make me dizzy.

And the chairs in the final picture are superb.

The Morris Louis in that room is a perfect example of why museums and galleries seldom have furniture! Pathetic.
Now I know why Clyfford Still wanted his OWN museum.