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Copy of Symmetry Prezi
Transcript of Copy of Symmetry Prezi
Order of rotation~ Number of times the image maps onto itself during a full 360 degree rotation.
Angle of rotation (180 or less)~ The minimum amount of degrees you must rotate a figure before it maps back onto itself. NOTE: If a figure has exactly 180 degree rotation symmetry, this is known as Point Symmetry. The letter H has Point symmetry! Here are a few more examples of figures with Rotation Symmetry Order: 3 Angle: 360/3= 120 degrees Order: 20 Angle: 360/20= 18 degrees Order: 4 Angle: 360/4= 90 degrees Order: 6 Angle: 360/6= 60 degrees Look Closely at the figures on this page...Do you think a figure can a figure have BOTH Reflection and Rotation Symmetry? Consider the figures below. Determine whether they have Reflection symmetry, Rotation Symmetry or both. Be prepared to provide all of the necessary info for the type(s) of symmetry you decide on. Rectangle Square What you need to do in order to get your homework sheet is to come up with four images/sketches for me.
1. A figure with only Reflection Symmetry
2. A figure with only Rotation Symmetry
3. A figure with BOTH types of Symmetry
4. A figure with NEITHER Symmetry Call me over to your desk when you are finished to get your work checked! (Do NOT copy images from today's lesson. Be Creative!)