A B C D E H K M U V W X Y * * * * * What? Most of these letters do not have rotational symmetry and so cannot have rotational AND line symmetry. Or did the meaning of AND change last night? The only upper case letters with both are H, I, O, X
No.
No, it does not.
Only one.
In cyclical order. For example, if the sides of a hexagon are in three similar parts: a,a,b,b,c and c then rotational symmetry requires them to be in the order a-b-c-a-b-c (or similar). The angles also need to follow the same pattern.
A, B, C, D, E, F, G, J, K, L, M, P, Q, R, T, U, V, W, Y. A figure has rotational symmetry of order 1 only if it has to be rotated through 360 degrees before its image is congruent. In common usage, it has NO rotational symmetry.
In the upper case: A, C, D, E, H, I, K, M, O, T, U, V, W, X, Y. In the lower case: c, l, o, v, w, x.
16 letters have line symmetry: A, B, C, D, E, H, I, K, M, O, T, U, V, W, X, Y 6 letters have rotational symmetry: H, I, N, O, S, X, Z 4 letters have both: H, I, O, X
A letter "C" has infinite lines of symmetry. This is because a line of symmetry can be drawn through the center of the curve of the "C," dividing it into two equal halves that are mirror images of each other. The curve of the "C" can be rotated around its center point to create an infinite number of lines of symmetry.
15,( a, c, d, e, h, i, m, n, o, s, t, u, v, w, x,)
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.
Is it a high symmetry molecule (i.e. tetrahedral or octahedral)? No Does it have a rotational axis? Yes- C3 Does it have any planes of symmetry? Yes (3)sigma-v's Does it have any perpendicular rotational axis? No - must be a C group Any horizontal planes? No It's a C3V, same as NH3.