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How many lines of symmetry does the triangle have?
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Determine whether the figure has rotational symmetry. If so, describe any
rota.t ions that map the figure onto itself.
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In Exercises 9-12, use the description to draw a figure. If not possible,
write not possible.
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9. A triangle with exactly two lines
10. A regular hexagon with no rotational
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11. A trapezoid with exactly one line
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12. A quadrilateral with exactly two lines
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Geometry
76
Chapter 9 Resource Book
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I~-_9_.6_~IPractice A
continued
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For use with pages 6!9-ll24
13. Error Analysis Describe and correct the error made in describing the symmetry
of the figure.
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The figure has one l.ine of
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Detennine whether the entire word has line symmetry and whether it has
rotational symmetry. Identify all lines of symmetry and angles of rotation
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18. Find the number of lines of symmetry
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for the first aid kit cover.
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19. Find the number of lines
for the shaded figure.
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Does the first aid kit cover have rotational
symmetry? If so, describe a rotation that maps
the pattern onto itself.
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W0A ~D~\Geometry
Chapter 9 Resource Book
77
Determine how many lines of symmetry each figure has. Then determine whether
the figure has point symmetry.
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Identify if the figure has point symmetry and/or rotational symmetry. If rotational symmetry,
what is the degree ~f rota t.1ioore?'
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a square
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