A student prints out the word "MATH" in large capital letters on a piece of paper.
Which letter in the word "MATH" has both a vertical (top-to-bottom) line of symmetry and a horizontal (left-to-right) line of symmetry?

Answer: D. H

A line of symmetry means you can fold a letter perfectly in half so both sides match.
M, A, and T can only be folded down the middle from top to bottom (vertical).
H can be folded top-to-bottom AND right across the middle from left-to-right (horizontal).
Both folds match perfectly!

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