It depends on the style of the home. What style is the home?

Is there a concern of the openings being a different heights?

Why the miniature tray ceiling?

Yes, the openings should be an extension of the style of your home.

A soft eyebrow arched opening, but indicate a home that leans traditional or with European style influences.

Repeating an arch inside the home makes more sense when they appear on the exterior of the home.

If you go arch, I like the eyebrow arch as shown in your picture. The full arch Toronto posted feels dated unless your home is built to look like a classic (which I assume it's not, since there appears to be multiple models of the same home with either square or arched openings)

Personally I like a somewhat parabolic arch.

With proper architecture.

Like so many have said, arched doorways can be beautiful if they fit with the architecture of the home. If not they can feel out of place. If unsure I would probably lean toward square.

A strong vote for arched.

Any passage opening can be beautiful, but in this case, both pics look oddly proportioned within the hallway space.

Whatever you do, do it well. To me, the trend to arch, or a mix is a natural rebuttal to the now ubiquitous "modern farm" . A softening if you will.

For every ( overdone) action, there will be a reaction. Call the trend modern European : )

You might want to consider an architrave. They make the house feel plusher. You can go the opposite and choose minimalist - no architrave - then square is the way to go. Arches with not architrave have a slightly rural old fashioned farmhouse aesthetic - which is great if you like that - but I'm not sure it matches with the rest of the appartment.

Arched.

I think a semicircular arch can be problematic when all openings are not the same width because as the width increases so does the lower end points of the semicircle.

For that reason, the segmented arch works better because the vertical part of the frame can be the same height on all openings (within reason) and the arc portion can stretch or shrink a bit.

Same with the arch that Mark shows, but that's really more of a three-centered arch. A parabolic arch would continue to the floor. The golden arches at McDonald's are parabolic arches.

In any case they have to be very skilled to make arches like this that are consistent. There are companies who will prefabricate these. And unless they are all drywall, you have to get custom millwork.

I did a semicircular arch and a pseudo three centered arch (flat in the middle) in a historic renovation, and just two was a lot of work and expense...primarily the matching millwork.

Images of the exterior of the house would be extremely helpful to determine which would be best for continuity in design.

Thank you palimpsest. "three-centered arch" is the proper terminology, it is also sometimes called an "elliptical" arch, which is the term I failed to find.

Which may be, why this particular builder using a "one from column a / b scenario" should not be doing that "option" or perhaps any arch.

I don't think the skill set is there.

@ Palimpsest summed it up extremely well.. It isn't as simple as "just" make an arch over here : )

I think the reason I may not do them here is because of the offset openings. I think the arch works better with a perfect enfilade rather than a hallway with an opening at one and and one at the other that don't line up. All aligned is a bit more ceremonial, as are arches. If it's just doorways, maybe not so much.

In my house, which is only two rooms deep on the first floor I have a front door and a back door that are lined up (the house looks like a cartoon, it's so symmetrical) but the intervening doorway was offset by about 7 inches because of the stairs.

I actually ended up moving one wall completely just a couple inches but it made the kitchen bigger, and moving the door to the basement stairs in order to get all four openings perfectly lined up ( I also created doorway). A little obsessive I know. But the weird offset drove me crazy. and other people who notice those things noticed it too.

Perfectly stated above! With the word hidden within my brain freeze this am: Enfilade:)

I thought it was a digestive track disorder. Learn something new every day.

Here's one that has both things we are talking about. The axial alignment helps

: ) Have to say.....I wasn't aware of the gunfire association for enfilade.

Even though I'll probably never get to use them, architrave and enfilade are terms that I am now happy to know.

A parabolic arch does not have to go to the floor - it can stop wherever you want it to and still be parabolic. However, if it does not go to the floor, it will not have a smooth transition to the walls, but this does not prevent it from being a parabola, although I would avoid this and use elliptical instead, which is what Mark showed.

That said, I voted for square instead of arched because the arches you showed did not blend into the structure.