This sheet shows the "Key Rules" to common transformations; reflections over the x-axis, reflection over the y-axis, reflections over the line y = x and y = -x, translation, rotation of 90 degrees with a center at the origin rotation of 180 degrees with a center at the origin, rotation of 90 degrees clockwise with a center at the origin, and dilation with a center at the origin and dilations with a center not at the origin. This sheet shows pictures of each transformation and describes how their