3. TriangleLJK is the scaled triangle of Triangle FGH

the Scale factor = 3/6 = 1/2

missing length 6/x =1/2 or x = 12

missing length y/9 =1/2 or y = 4.5

4) given triangle are similar by AAA similarity

Scale factor = 10/8 = 1.25

now x/4.8 = 10/8

solving we get, x = 10*4.8 /8 = 6 or x = 6

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