Which of the following sets of points would create a rectangle when connected? a. (1,2) , (3,1) , (3,2) , (1,5) b. (2,1) , (3,2) , (5,3) , (1,5) c. (1,2) , (2,3) , (3,5) , (5,1) d. (1,2) , (3,2) , (3,5) , (1,5)

If, while training for a marathon, you ran 60 miles in 2/3 months, how many miles did you run each month? (assume you ran the same amount each month) write your answer as a whole number, proper fraction, or mixed number in simplest form. you ran __ miles each month.

Given: pqrs is a parallelogram prove: pr and qs bisect each other at t

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.