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Math explained in easy language, plus puzzles, games, quizzes, worksheets and a forum. For K-12 kids, teachers and parents. ... The simplest symmetry is Reflection Symmetry (sometimes called Line Symmetry or Mirror Symmetry). It is easy to recognise, because one half is the reflection of the other half.
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www.mathsisfun.com/geometry/symmetry.html
www.mathsisfun.com/geometry/symmetry.html
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Reflection symmetry - Wikipedia, the free encyclopedia
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Reflection symmetry , line symmetry , mirror symmetry , mirror-image symmetry , or bilateral symmetry is symmetry with respect to reflection. In 2D there is an axis of symmetry, in 3D a plane...
en.wikipedia.org/wiki/Reflection_symmetry
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If we can draw a line on a picture that splits it in half so that one side of the line is a mirror image of the other, we say that the picture has reflection symmetry.
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www.geom.uiuc.edu/~lori/kali/reflect.html
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When you look in a mirror you see your reflection. So it is easy to remember that when a shape has a line of symmetry it has reflection symmetry.
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www.bbc.co.uk/schools/gcsebitesize/maths/shapes/symmetr...
www.bbc.co.uk/schools/gcsebitesize/maths/shapes/symmetryrev1.shtml
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This is a parallelogram. It is easy to get caught out with parallelograms, because they do not have any lines of symmetry. Parallelograms do not have reflection symmetry.
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www.bbc.co.uk/schools/gcsebitesize/maths/shapes/symmetr...
www.bbc.co.uk/schools/gcsebitesize/maths/shapes/symmetryrev2.shtml
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In this second i-Math you will investigate reflection, mirror, or bilateral symmetry. Mirrors can be used to create reflection symmetry. Many objects in nature, such as butterflies, the human body, and many types of leaves have bilateral symmetry.
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illuminations.nctm.org/index_o.aspx?id=139
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A movement of a figure to a new position by flipping the figure over a line ; Example:;
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www.harcourtschool.com/glossary/math2/define/gr4/reflec...
www.harcourtschool.com/glossary/math2/define/gr4/reflection4.html
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CiteSeerX - Document Details (Isaac Councill, Lee Giles): We introduce a sequent calculus B for a new logic, named basic logic. The aim of basic logic is to find a structure in the space of logics. ... We isolate three properties, which characterize B positively: reflection, symmetry and visibility.
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citeseer.ist.psu.edu/sambin00basic.html
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