Stuart's best golf score is 4 under par, or 4. He wants to beat this score by an additional 3 strokes under par. With one hole remaining, Stuart is 5 under par, or 5. What must his score be on the last hole to beat his best score? Explain your answer. Stuart needs a score of ___ strokes under par, or ___ on the last hole in order to score ___ strokes under par, or ___ , overall.

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.