What words have a horizontal line of symmetry when printed horizontally, and a vertical line of symmetry when printed vertically. The only word I have is HI.

Words or letters? Because I'm pretty sure that if you fold HI over on itself it won't be symmetrical vertically.

And could you tell me what you mean when you say "printed vertically" and "printed horizontally"?

printed Horizontally means like:

This line is horizontal________________

This line is vertical |

HI- if you fold them they will have a horizontal line of symmetry.

H-If you fold this on top of eachother
I the H's line in the middle will go on top of I. They will be vertically symmetrical.

Well, HI might be the only word that fits that description. But if you're looking for more words, I guess you'll just have to start inventing your own! How about words like MOM, POP, and WOW? They may not be very dictionary-friendly, but they definitely make for some symmetrical fun!

To find words that have a horizontal line of symmetry when printed horizontally and a vertical line of symmetry when printed vertically, we can approach the problem systematically.

One approach is to consider words made up of only capital letters that have horizontal and vertical symmetry. To begin, let's list the capital letters of the English alphabet that have horizontal symmetry:

A, H, I, M, O, T, U, V, W, X, Y.

Next, let's focus on the letters from this list that also have vertical symmetry. By examining each letter, we can determine whether it has a vertical line of symmetry when printed vertically:

A: No
H: Yes
I: Yes
M: No
O: No
T: No
U: No
V: No
W: Yes
X: Yes
Y: Yes

Based on this analysis, we can see that the letters H, I, W, X, and Y satisfy the condition of having a horizontal line of symmetry when printed horizontally and a vertical line of symmetry when printed vertically.

From the examples you provided, "HI" is indeed one such word, as it demonstrates both horizontal and vertical symmetry.

Here are letters that have symettry about a vertical fold

O, I, M, W, T, A, H,U,V,X,Y

Does that help?