Reflection

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Synopsis: This diagram shows a triangle reflected on two different mirror lines. A locator dot and title are shown. These must always be at the top left of the page when the image is the right way up. There is a graph with all four quadrants showing, and the x and y axes ranging from -3 to 3. The x and the y axis intersect at the origin O. Positive values are to the right and to the top of the diagram. Negative values are to the left and to the bottom of the diagram. Not all axis division marks are labelled. Some of the braille uses maths code notation. When a shape is reflected it is the same shape but turned over into a new position. The original triangle 1 is in the top left quadrant. Triangle 2 to the right is a reflection in the y-axis. The mirror line is represented by a heavy dashed line which has replaced the normal y axis line in the top part of the diagram. Triangle 3 in the bottom right quadrant, is a reflection in the y = x-axis. This mirror line is also shown as a heavy dashed line. Note the two mirror lines would normally go from one edge of the graph to the other, in this diagram the mirror lines have been shortened to prevent tactile confusion.

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