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26-04-2017
Mathematics

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1. Adjacent, complementary, vertical, or supplementary
2. 65, 55, 120, 125, 115, or 60
3. EDF, ABF, EFD, or ADE

1 Adjacent complementary vertical or supplementary 2 65 55 120 125 115 or 60 3 EDF ABF EFD or ADE class=

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26-04-2017

1) ABF & EBD ARE SUPPLEMENTARY ANFLES (ABF + EBD =180)
2) FED=?. Note that FED=GEC=(16x-8).
Now in Triangle FED, the relation is (16x-8) + 35 + (2x+9) =180
hence x=8 & DEF=120

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