Week 9 Term 3

This week I have learned how to find a vector of an object. To find the vector of an object you count the number of moves the shape has moved horizontally and then vertically. This is pretty much your vector but you write it in order that the horizontal number comes first followed by the vertical number. i.e. (2,-8) could be a vector. If the shape has moved left or down in this sequence then you put a – before the number. I also learned how to find axes of symmetry. To find axes of symmetry you move the shape clockwise ,or counter clockwise, it doesn’t matter and see how many times it can be moved so that it is back to its original shape. I also learned how to find the order of rotational symmetry. To find the order of rotational symmetry you rotate the shape and count how many times its goes back to its original shape. Its just like finding axes of symmetry. I also learned how to find the total order of symmetry. To find the total order of symmetry you find the lines of symmetry and the order of rotational symmetry and add them together. For example. A pentagon has 5 lines of symmetry and a order of rotational symmetry total of 5 so the total is 10.