How many of the alphabets have exactly one line of symmetry?

A, B, C, D, E, F, G, H, I, J, K, L, M, N, O.

To determine how many of the given letters have exactly one line of symmetry, we first need to understand what symmetry means in this context. A letter has a line of symmetry if you can draw a line through it such that one half is a mirror image of the other. For letters with exactly one line of symmetry, that line can either be vertical or horizontal, but not both.

Analyzing Each Letter

Let’s go through the letters one by one:

• A: Has a vertical line of symmetry.
• B: Has a vertical line of symmetry.
• C: Has no lines of symmetry.
• D: Has a vertical line of symmetry.
• E: Has no lines of symmetry.
• F: Has no lines of symmetry.
• G: Has no lines of symmetry.
• H: Has both vertical and horizontal lines of symmetry.
• I: Has both vertical and horizontal lines of symmetry.
• J: Has no lines of symmetry.
• K: Has no lines of symmetry.
• L: Has no lines of symmetry.
• M: Has a vertical line of symmetry.
• N: Has no lines of symmetry.
• O: Has both vertical and horizontal lines of symmetry.

Identifying Letters with Exactly One Line of Symmetry

From our analysis, we can summarize the findings:

• Letters with exactly one line of symmetry: A, B, D, M.

Final Count

Thus, there are four letters in the list that have exactly one line of symmetry: A, B, D, and M. Each of these letters can be divided into two symmetrical halves by a single line, which is either vertical or horizontal.

This exercise not only helps in understanding symmetry but also enhances our visual perception of letters and shapes. If you have any more questions about symmetry or related topics, feel free to ask!