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Mathematics, 21.09.2019 19:10 SmokeyRN

Which of the following is not true?
a. a rectangle has rotational symmetry and always has line symmetry
b. a parallelogram has rotational symmetry and may have line symmetry
c. a triangle has rotational symmetry and always has line symmetry
d. a regular hexagon has rotational symmetry and always has line symmetry

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