official gen's answer to roséanne's Primary 6 Maths Geometry Singapore question.

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official gen
Official Gen's answer
4 answers (A Helpful Person)
BFE=180-105=75
BFE=BEF=DBE=75
DEB=180-75-68=37
FBE=180-75-75=30
then I lazy do but shld be enough ya u shld know how to solve liao