Question

Which of the alphabets of the word "DICTIONARY" possess rotational symmetry?

Answer 1

If we take an alphabet only once, then we have the following alphabets in the word DICTIONARY:

D - Horizonal line symmetry only
I - Horizonal as well as vertical line symmetry, Rotational symmetry as well
C - Horizonal line symmetry only
T - Vertical line symmetry only
O - Horizonal as well as vertical line symmetry, Rotational symmetry as well
N - Rotational symmetry only
A - Vertical line symmetry only
R - Neither line of symmetry nor rotational symmetry
Y - Vertical line symmetry only

Hence alphabets I, O, and N possess rotational symmetries.