E) the diagonal of square a, marked off by the red stars, is where the concession stand is located. a local high school band is performing at the outdoor theater on a summer evening. the band has a school banner that is 40-feet long, and band members would like to hang it across the concession stand to let people know they are performing. estimate the length of the concession stand to determine if the school banner can fit across the length of the concession stand. show your work and explain your reasoning. 

Statement reason 1. δabc is similar to δced. given 2. 3. definition of slope 4. slope of slope of definition of slope 5. slope of × slope of multiplying the slopes 6. slope of × slope of substitution property of equality 7. slope of × slope of simplifying the right side the table contains the proof of the relationship between the slopes of two perpendicular lines. what is the reason for statement 2? a. parallel line segments that meet a common perpendicular line are proportional in length. b. the lengths of vertical and horizontal sides in congruent triangles are in a common ratio. c. trigonometric identities determine the lengths of the legs in a right triangle. d. corresponding side lengths in similar triangles are proportional in length.