AABC~ AQRS Find the missing side length, m.
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В B.
h 7.2.
6
10
12.
А.
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3
m
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Find the scale factor then multiply 3 by scale factor to find m. Scale factor is found by dividing larger side by smaller side. In this example, divide 10 by 6. (10 / 6 = 1.66666...) This means the larger triangle is 1.6x bigger than the smaller one. Then multiply 3 by 1.6666.. to find m. Hope this helps! :)

Btw your answer would be m = 5 but I didn’t want to give that away right away.

The scale factor between the two triangles is so x is so x =9