Answer
H, I, O, X
Explanation — very beginner friendly
Step 1: Understand the idea.
- A line of symmetry is a line that splits a shape into two matching halves.
- If you fold a shape on that line, the two parts overlap exactly.
- Vertical line of symmetry: a straight line from top to bottom (like
|).
- Horizontal line of symmetry: a straight line from left to right (like
—).
- Some letters may also have diagonal symmetry (slanting lines).
Step 2: We need letters with more than one line of symmetry.
Let’s test the letters one by one (think of simple block-style capital letters):
- H
- Fold along a vertical line through the middle ⟶ left and right match.
- Fold along a horizontal line through the middle ⟶ top and bottom match.
- So, H has 2 lines of symmetry (vertical and horizontal).
- I (block “I”, not with fancy serifs)
- Fold along the vertical middle line ⟶ halves match.
- Fold along the horizontal middle line ⟶ halves match.
- So, I has 2 lines of symmetry (vertical and horizontal).
- O (think of a perfect oval/circle shape)
- Fold along the vertical middle line ⟶ halves match.
- Fold along the horizontal middle line ⟶ halves match.
- In a perfect circle there are many symmetry lines, but for the letter shape we count at least these two.
- So, O has more than one line of symmetry.
- X
- Fold along the diagonal from top-left to bottom-right ⟶ halves match.
- Fold along the diagonal from top-right to bottom-left ⟶ halves match.
- (Vertical or horizontal folds usually don’t match for X.)
- So, X has 2 lines of symmetry (the two diagonals).
Step 3: Final list.
The capital letters with more than one line of symmetry are: H, I, O, X.