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The line that you reflect over is called the line of symmetry. A line of symmetry divides a figure into two mirror-image halves. The dashed lines below are ...
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www.learner.org/courses/learningmath/geometry/session7/...
www.learner.org/courses/learningmath/geometry/session7/part_a/index.html
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Math question: What figure has two lines of symmetry? a rectangle ... Which figure has 3 lines of symmetry? How many of lines symmetry has a kite? What 2d shape has two lines of symmetry? Whats a figure with 2 lines of symmetry? A figure that has 4 lines of symmetries? What figure has four lines of symmentry?
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wiki.answers.com/Q/What_figure_has_two_lines_of_symmetr...
wiki.answers.com/Q/What_figure_has_two_lines_of_symmetry
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Geometry question: How many lines of symmetry does a rhombus have? A rhombus has two lines of symmetry, joing its opposite corners. ... A rhombus has two lines of symmetry, joing its opposite corners.
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wiki.answers.com/Q/How_many_lines_of_symmetry_does_a_rh...
wiki.answers.com/Q/How_many_lines_of_symmetry_does_a_rhombus_have
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Question: How many lines of symmetry do the following figures contain? ... I think there are two levels of this type of problem. ... Having detected ONE mirror, it makes more sense to look for rotations. If the object has rotational symmetry, then the rotation of a mirror will be a new mirror.
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mathcentral.uregina.ca/QQ/database/QQ.09.01/cindie1.htm...
mathcentral.uregina.ca/QQ/database/QQ.09.01/cindie1.html
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We then investigated all the letters of the alphabet for symmetry and found that: - some have no lines of symmetry; - some have one line of symmetry; - some have two lines of symmetry; - one letter has many lines of symmetry;
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www.schools.ash.org.au/stkierans-manly/Classes/Yr6/6B/S...
www.schools.ash.org.au/stkierans-manly/Classes/Yr6/6B/Symmetry/16.htm
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The second graders also participated in this activity, but their predictions involved designs cut from two folds thereby having two lines of symmetry! Each student then made a collage of their own symmetrical, cut paper designs (1st graders - one line of symmetry, 2nd graders - two lines of symmetry).
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www.kirkwood.k12.mo.us/parent_student/te/mcneelj/oneand...
www.kirkwood.k12.mo.us/parent_student/te/mcneelj/oneandtwotogether/symmetry.htm
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From this it can be proved that every segment has two lines of symmetry: itself and its perpendicular bisector. This is the same as the letter I discussed above. Angles only have one line of symmetry: the angle bisector which causes one ray to reflect onto the other ray.
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www.andrews.edu/~calkins/math/webtexts/geom06.htm
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In fact, since the figure has two lines of symmetry, and if you can work with fractions, you can really save yourself some work. Now you can look at just a fourth of the figure, and see that there are two blue triangles out of six triangles in all (You have to add the 1/2 yellow and 1/2 red to make six total).
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math.rice.edu/~lanius/Patterns/design2.html
math.rice.edu/~lanius/Patterns/design2.html
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