Kerjakan soal nomor 26, 27, dan 28
Jawaban Terkonfirmasi
LINGKARAN
• Segiempat talibusur
26][
∠ABC = 50°
∠ABC + ∠ADC = 180°
→ ∠ADC = 180° – 50° = 130°
27][
2x + 3 = 180° – 75°
2x + 3 = 105
2x = 102
x = 51°
3y – 2 = 180° – 140°
3y – 2 = 40°
3y = 42°
y = 14°
x – y = (51-14)° = 37° ← jwb
28][
∠ADC = 28°
∠BAC = 70°
∠BAC + ∠BCA = 180°
∠BCA = (180-70)° = 20°
∠BCD = ∠ADC + ∠BCA
∠BCD = (28+20)° = 48° ← jwb