Name
*
In 1 and 2, tell if each line is a line
of symmetry.
1.
2.
In 3 and 4, tell how many lines of
symmetry each figure has.
3.
4.
5. Draw a shape that has no lines
of symmetry.
6. How many lines of symmetry does
the figure below have?
7. Extend Your Thinking How many
lines of symmetry does a bicycle tire
have?
In 8 through 11, tell if each line is a line of symmetry.
8.
9.
10.
11.
In 12 through 19, draw and tell how many lines of symmetry each figure has.
12.
13.
14.
15.
16.
17.
18.
19.
*For another example, see Set I on page 826.
Topic 14 Lesson 14-9
811
20. The Thomas Jefferson Memorial is located
in Washington, D.C. Use the picture of the
memorial at the right to decide whether
the building has a line of symmetry. If so,
describe where the line of symmetry is.
21. Explain How many lines of symmetry
does a scalene triangle have? How do
you know?
22. Reason How many lines of symmetry
does an isosceles triangle have?
23. Connect Vanessa drew a figure that
has an infinite number of lines of
symmetry. What figure did she draw?
24. Draw a Picture Draw a quadrilateral that
has no lines of symmetry.
25. Extend Your Thinking How many lines
of symmetry can a parallelogram have?
Explain.
26. Which figure has six lines of symmetry?
812
A C
B D
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