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GEO: 12-5 QC (symmetry)
Contribuido por: Maynard
(Autor original: Dilaura)
12.5
a line that is even 
a line that divides a figure into 2 congruent parts.
a line that divides a figure into 3 congruent parts.
a line that can be divided into 2 congruent parts.
1. What is a line of symmetry?
12.5
2. True or False
A figure is said to be symmetric if there is a transformation that can trace the figure backonto itself.
True
False
3. Drag the correct label to each figure to tell    if the figure has symmetry and how many lines    of symmetry it has.
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no lines ofsymmetry
?
2 lines of 
symmetry
?
infinite lines
of symmetry
?
12.1
4. Tell if the figure is reflection symmetric.     If so, tell how many lines of symmetry the    figure has. 
No, not reflection symmetric
Yes, 2 lines of symmetry
Yes, 1 line of symmetry
Yes, infinite lines of symmetry
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5. Tell if the figure is reflection symmetric.     If so, tell how many lines of symmetry the    figure has. (ignore color and shadow - think only        about the shape/figure itself)
No, not reflection symmetric
Yes, 2 lines of symmetry
Yes, 1 line of symmetry
Yes, infinite lines of symmetry
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6. Tell if the figure is reflection symmetric.     If so, tell how many lines of symmetry the    figure has. 
No, not reflection symmetric
Yes, 2 lines of symmetry
Yes, 1 line of symmetry
Yes, infinite lines of symmetry
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7. What is the "order" of rotational symmetry mean?
The number of vertices of the preimage.
The smallest degree in which you turn the      preimage to coincide with the image. 
The number of times the figure can be    rotated to coincide with the preimage.
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8. Tell if the following figure is rotationally     symmetric and if so, what is the order.
No, not rotationally symmetric
Yes, order is 1
Yes, order is 2
Yes, order is 3
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9. Tell what the angle of rotational symmetry is 
    for the following figure. 
3 degrees
60 degrees
120 degrees
180 degrees
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10. Tell what the angle of rotational symmetry is 
      for the following ambigram.
3 degrees
60 degrees
120 degrees
180 degrees
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11. Tell if the following figure is rotationally       symmetric and if so, what is the order.
No, not rotationally symmetric
Yes, order is 1
Yes, order is 2
Yes, order is 3
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12. Tell if the following figure is rotationally      symmetric and if so, what is the order.
No, not rotationally symmetric
Yes, order is 4
Yes, order is 3
Yes, order is 2
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13. Tell if the following figure is rotationally       symmetric and if so, what is the order.
No, not rotationally symmetric
Yes, order is 3
Yes, order is 4
Yes, order is 6
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