In triangle ABC, the length of side AB is 12 inches and the length of side BC is 21 inches. Which of the following could be the length of side AC?

AB: 12

BC: 21

AC: 24.2

Step-by-step explanation:

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have

∠cbe and ∠deb are same-side interior angles.

i took the test