A homeowner is fencing in his triangular
backyard. Two sides of the backyard are
perpendicular to one another. One of the
perpendicular sides has the length of m feet,
and the other perpendicular side has the
length of n feet. The length of the third side of
the yard is / feet.
Which of the following functions would best model the situation above?

Select the correct answer. given: ∆abc with prove: statement reason 1. given 2. ∠cab ≅ ∠edb ∠acb ≅ ∠deb if two parallel lines are cut by a transversal, the corresponding angles are congruent. 3. ∆abc ~ ∆dbe aa criterion for similarity 4. corresponding sides of similar triangles are proportional. 5. ab = ad + db cb = ce + eb segment addition 6. substitution property of equality 7. division 8. subtraction property of equality what is the missing statement in the proof? scroll down to see the entire proof.