Yes. Horizontally.
In the lower case: no.
A horizontal mirror plane though the the middle line of the E
A line that divides the letter so that the 2 halves are mirror images. Ex. The letter V ... A vertical line thru the bottom makes 2 parts that are mirror images, so that vertical line is the axis of symmetry. But.. A Capital E would not have a vertical axis of symmetry. Capital E would have a horizontal line splitting thru the middle line as its axis of symmetry.
In a capital latter E, there is only 1 line of symmetry horizontally accros the middle.
A line of symmetry means that when you fold it in half that everything lines up perfectly. If you took the letter E and folded it in half sideways, does it line up perfectly? No. If you took an S and lined it up perfectly, does it over lap? Yes. Neither E nor S have a line of symmetry.
"e" does not have a line of symmetry. :D
The letters U, T, E and Y have one line of symmetry. The letter L has none. The letter O is often said to have 2, but a circle would have infinite.
The capital letter H does B, C, D, E, H, I, K, O, and X have a horizontal symmetry line.
H, A, V, and E have line of symmetry
depends on where you make the line. if you make it horizontal, then yes. If you make the line vertical then no. cut out the letter "c" and try and make different line of symmetry and then you can figure out different ways to make symmetrical lines. Yes, the letter C has a line of symmetry. If you draw a line through the middle of the C horizontally, that will be the line of symmetry.
Of the capital letters M, O, E, and X, -- M and E each have one line of symmetry, -- X has two lines of symmetry, or four if the cross lines were printed perpendicular, as they are in some fonts, -- O has an infinite number of lines of symmetry. My answer is justified by my firm conviction that it's correct.