10-a-Day the Easy Way: Fuss-free Recipes & Simple Science to Transform your Health

10-a-Day the Easy Way: Fuss-free Recipes & Simple Science to Transform your Health

Matematika Perhatikan gambar berikut ini А B 130° С 110° yo D E F Tentukan besar ZCEF (yº)​

Perhatikan gambar berikut ini А B 130° С 110° yo D E F Tentukan besar ZCEF (yº)​

Jawaban:

sudut ABC + sudut a = 180° (sudut sehadap)

sudut CED + sudut b = 180° (sudut sehadap)

maka, sudut ABC + sudut BCE + sudut CED = 360°

sudut CED = 360°-130°-110°

= 120°

sudut CED + sudut CEF = 180° (berpelurus)

sudut CEF = 180°-120°

= 60°

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