Chopsticks should not be left standing vertically in a bowl of rice or other food.

The C stands vertically and is supported by a frame.

Does the fact that it stands vertically play a role?

Both are "tower" machines that stand vertically instead of horizontally.

The top part of the tower is standing vertically.

The creature bucked hard, almost standing vertically on its tail.

Strings within a course are also given from left to right, facing the front of the instrument, with it standing vertically.

The stela stood vertically in a foundation on the lake bottom.

Human beings stand vertically on a horizontal plane, which makes the right angle crucial to us.

Then the stern rose slowly until the great ship stood vertically in the sea, all its lights still ablaze.