6) You use four stakes and string to mark the foundation of a house. You want to make sure the foundation is rectangular. The sides of are 26 ft, 84 ft, 26 ft and
84ft. You measure one of the diagonals to be 62 ft. use the measurements to
tell whether the foundation will be rectangular.

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.