Please help!! Choose the term that best fills in the blank to complete the statement.

  multiple

Step-by-step explanation:

Purely from a sentence structure point of view, the only appropriate choice is multiple.

The sentence as written is ambiguous, not making clear whether the "which" refers to the length or the scale factor. In order to make sense, the reference must be to length.

δabc ≅ δdcb by sas because

db ≅ ac . . given (side)

bc ≅ bc . . reflexive property (side)

∠dbc ≅ ∠ acb . . alternate interior angles where transversal bc crosses parallel lines bd and ac (included angle)