What was urban planner Daniel Bumham's greatest contribution to cities? ○His building designs were more practical and popular than any others.
○He developed the transportation system that brought visitors to the exposition.
○His Plan of Chicago offered a blueprint for the orderly growth of the city
○When the exposition was over, Chicage had many new buildings that others could copy

d) by the cross product property, ab^2 = bc multiplied by ad

step-by-step explanation:

we are given

in the given triangle abc

angle a is 90° and segment ad is perpendicular to segment bc

we can see that

triangle(abc) and triangle(abd) are similar because they have common side and same angle (90 degree)

so, triangles(abc) and abd are similar

since, they are similar

so, the ratio of their sides must be equal

we get

now, we can cross multiply

and we get

so, this could be step to prove it