Berdasarkan gambar di samping tentukan besar ∠ABC!
Penjelasan dengan langkah-langkah:
< ABC + < CDE = 180°
( 2x + 56 )° + ( 4x - 26 )° = 180°
180 - 56 + 26 = 2x + 4x
150 = 6x
x = 150/6
x = 25°ᅠᅠᅠ ᅠᅠᅠ ᅠᅠᅠ ᅠᅠᅠ ᅠᅠᅠ ᅠᅠᅠ ᅠᅠᅠ
besar < ABC
= ( 2x + 56 )°
= 2.25 + 56
= 50 + 56
= 106°
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Green
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