Answer: TS=10cm
Explanation:
Given: ABCD ≅ GHIJ and BCDA ≅ RSTU such that GH = 6 cm, HI = 8 cm, IJ = 10 cm, and GJ = 9 cm
As ABCD ≅ GHIJ
then its corresponding sides should be equal.[∵corresponding parts of congruent figures are equal]
i.e. AB=GH=6 cm, BC=HI=8 cm, CD=IJ=10cm , AD=GJ=9cm..............(1)
Now ,also BCDA ≅ RSTU then
BC=RS=8 cm, CD=ST=10 cm, DA=TU=9 cm, AB=UR=6 cm....................[from(1)]
Hence, we got ST or TS= 10 cm.