Reteach and Skills Practice Workbook

11–2
Name
Reteach
Geometry: Symmetry
Follow these steps to find out if a figure has
bilateral symmetry.
Trace Figure A and cut it out. Fold it
along one of the dashed lines. The two
halves match. The dashed line is a line
of symmetry. The figure has bilateral
symmetry. Unfold the figure. Fold the figure
along the other dashed lines. The halves
match, so all the lines are lines of symmetry.
Follow these steps to find out if Figure B has
rotational symmetry.
Date
Figure A
4MG3.4
Chapter Resources
Copyright © Macmillan/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
Trace Figure B and cut it out. Place it on top
of the original
Figure B. Put your pencil point on the dot in
the center. Turn the top figure 90º. The top
figure matches the original figure. Turn the
top figure 180º. The figures match. Figure B
has rotational symmetry.
Tell whether each figure has line symmetry. Write yes or no.
1. 2. 3.
Tell whether the dashed line is a line of symmetry. Then, tell
whether the figure has rotational symmetry. Write yes or no.
4. 5. 6.
Figure B
Grade 4 197 Chapter 11