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Verified answer
MAPEL = MATEMATIKAKELAS = 8
BAB = SUDUT
diketahui =
Sudut APD = 100°
ditaya = sudut ACB??
sudut APB ( sudut pusat yang menghadap pada busur yang sama dengan sudut ACB ) :
= 180° - sudut APD
= 180° - 100°
= 80°
sudut ACB :
= ½ × sudut pusat
= ½ × 80°
= 40° ➡ B.