Line Symmetry and Reflection
Butterflies, Pinwheels, and Wallpaper – Investigation 1.1
Name: ______________________________ Date: ____________________
In Class Work:
1. Using only a pencil and a ruler, draw the reflection of quadrilateral JKLM.
2. Is segment K’L’ the image of segment KL? In other words, when you reflect the
points K and L to find points K’ and L’, does this reflection carry with it all the
points between K and L, and locate them on segment K’L’. Explain.
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3. Are the properties of the original quadrilateral JKLM preserved in its image
J’K’L’M’? Explain.
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4. The design to the right has reflection symmetry.
Using a pencil and a ruler, draw the line of symmetry.
5. Explain how you found the location of the line.
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Homework:
1. Which capital letters have reflection symmetry? For each one that does, draw
all of the lines of symmetry.
Directions: For each design, determine if it has reflection symmetry. If it does,
draw all of the lines of symmetry. How many lines did you draw?
2.
5.
3.
6.
4.
7.
8. Draw the image of triangle ABC after a reflection
in line m.
9. Draw the reflection image of quadrilateral JKML.
Does the final drawing have reflection symmetry?
Explain. ________________________________
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10. Quadrilateral A’B’C’D’ is a
reflection image of quadrilateral ABCD.
Draw the line of reflection and explain
how you found it.
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Directions: Draw the reflection of each polygon over line L.
11.
12.