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primary 6 | Maths
| Geometry
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Date Posted: 1 year ago
Views: 260
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BFE = 180 - 105 = 75
BFE = FEB = 75 (Isoceles triangle)
FEB = EBD = 75 (Alt angle)
(a) DEB = 180 - 75 - 68 = 37
EBC = 180 - 37 - 19 = 124
FBE = 180 - 75 - 75 = 30
(b) FBC = EBC + FBE = 124 + 30 = 154
BFE = FEB = 75 (Isoceles triangle)
FEB = EBD = 75 (Alt angle)
(a) DEB = 180 - 75 - 68 = 37
EBC = 180 - 37 - 19 = 124
FBE = 180 - 75 - 75 = 30
(b) FBC = EBC + FBE = 124 + 30 = 154
怀疑人生ing
Great
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
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
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