9/28/12 Math Journal

What have you learned thus far about similarity versus congruence? How do transformations that result in congruent images differ from transformations that result in similar images? What strategies can be used to trace the sequence of transformations, and how can the information you obtain from the sequence help you to prove if the original and final images are congruent or similar?

Math Journal 9/23/12

Journal: What have you learned this week about congruence and transformations? What properties (size, shape, orientation) of an image, if any, change when you perform each of the transformations studied this week? How does the orientation (location) change for each type of transformation? Where are some places in your world that you see transformations?

Journal: According to a compass rose this arrow is facing east. Explain how a reflection (flip) over the y-axis, a rotation (turn) counter-clockwise, and translation (slide) 4 units down would affect the direction of this arrow. Which direction according to a compass rose would the arrow be facing after each transformation?