Use the following figure to answer BOTH parts the question. (a) Describe in words a sequence of transformations that maps ∆ABC to ∆A'B'C'.
(b) Write an ordered-pair rule for each transformation in the sequence.

You can find the constant of proportionality by finding the ratio of

Describe the symmetry of the figure. identify lines of symmetry, if any. find the angle and the order of any rotational symmetry.

Set $r$ is a set of rectangles such that (1) only the grid points shown here are used as vertices, (2) all sides are vertical or horizontal and (3) no two rectangles in the set are congruent. if $r$ contains the maximum possible number of rectangles given these conditions, what fraction of the rectangles in set $r$ are squares? express your answer as a common fraction.