Jawab:
Sudut E = 40°
Penjelasan dengan langkah-langkah:
4x + 3x + 2x = 180°
9x = 180°
x= 20°
sudut e = 7(20) = 140°
180°-140°=40°
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Jawab:
Sudut E = 40°
Penjelasan dengan langkah-langkah:
4x + 3x + 2x = 180°
9x = 180°
x= 20°
sudut e = 7(20) = 140°
180°-140°=40°