![reflection symmetry reflection symmetry](https://fibonaccisusan.files.wordpress.com/2014/10/57-3.jpg)
Remind students that they have to write from right to left (rather than left to right as we usually write). Ask students to practice mirror writing their name and have them check their writing with a mirror. Use a mirror to determine what is written. For example, the image of a heart has one line of symmetry, as we can fold the heart in half to create the same shape. When a figure can be mapped (folded or flipped) onto itself by a reflection, then the figure has a line of symmetry. Then explain mirror writing to the class. Additionally, symmetry is another form of a reflective transformation. Ask students to stand for symmetrical shapes and sit for asymmetrical shapes. Then show students more shapes and ask students to determine which shapes are symmetrical. If at any point the object is exactly the same as before the rotation, then the object has rotational symmetry. Pick an object and rotate it 180 degrees about its center.
![reflection symmetry reflection symmetry](https://image.slidesharecdn.com/symmetryrotationtranslationreflection-131009162242-phpapp02/95/symmetry-rotation-translation-reflection-7-1024.jpg)
Show that doing so does not make the shape symmetrical, but shows different results. Many shapes have rotational symmetry, such as rectangles, squares, circles, and all regular polygons. Remind students that you could place the mirror on the line in two ways, to reflect the left or right side of the heart. The elements of symmetry present in a particular crystalline solid. The whole heart is symmetrical, but when students try placing the mirror on the dotted line of the broken heart, they should see that it is asymmetrical- or does not have symmetry. Other articles where reflection is discussed: symmetry: reflection, and inversion.
![reflection symmetry reflection symmetry](https://i.ytimg.com/vi/U3f8fiCSCuE/maxresdefault.jpg)
Ask students to place the mirror on the dotted line and to determine if the shape has symmetry or not. Hand out a worksheet with a heart and a broken heart as well as a mirror. If you don't have a mirror you could also fold it in half to determine if a shape has symmetry. Explain to students that a shape has symmetry if the image remains the same if you place a mirror in the middle of the object.