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2.4 –Symmetry. Line of Symmetry: A line that folds a shape in half that is a mirror image.

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Presentation on theme: "2.4 –Symmetry. Line of Symmetry: A line that folds a shape in half that is a mirror image."— Presentation transcript:

1 2.4 –Symmetry

2 Line of Symmetry: A line that folds a shape in half that is a mirror image

3 1. For each image below, reflect the shape over the line.

4

5

6 2. Determine if the shapes have line symmetry. If it does, draw in all possible lines of symmetry.

7 one

8 none

9 one

10 two

11 Rotational Symmetry: A degree that turns a shape onto itself 360° # matches Degree =

12 3. Determine if the shape has rotational symmetry. If it does, find the degree of rotational symmetry.

13 90 °, 180 °, 270 °, 360 °

14 b. 120 °, 240 °, 360 °

15 60 °, 120 °, 180 °, 240 °, 300 °, 360 °

16 none

17 4. Below are the most common geometric shapes you will be learning throughout geometry. Identify if the shapes have reflection symmetry, rotation symmetry, both, or none. If it has reflection symmetry, state how many lines of symmetry it has. If it has rotation symmetry, state the degree of rotation.

18 6 lines 60 °, 120 °, 180 °, 240 °, 300 °, 360 ° 1 line No rotation

19 2 lines 180 °, No line 360 ° No rotation

20 No line 3 lines 120 °, 240 °, 360 ° No rotation

21 4 lines 90 °, 180 °, 360 ° 270 °, 1 line No rotation

22 infinite2 lines 180 °, 360 ° infinite

23 No line 1 line No rotation

24 No line1 line No rotation

25 no line 180 °, 5 lines 72 °, 144 °, 288 °, 216 °, 360 °


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