Kerjakan soal nomor 24 & 25
Jawaban Terkonfirmasi
LINGKARAN
• Sudut
24][
AC = diameter
→ sudut pusat AOC = 180°
→ sudut keliling∠ABC = 90°
∆ABC:
∠ABC + ∠BAC + ∠BCA = 90°
∠BAC + ∠BCA = 90°
∠BAC : ∠BCA = 7 : 11
∠BAC = (7/11) × 90° = 35° ← jwb
25][
ABCD merupakan segiempat tali busur.
Jumlah sudut yang berseberangan 180°
∠A = 80°
∠A + ∠C = 180°
→ ∠C = 180° – 80° = 100°
∠B = 65°
∠B + ∠D = 180°
→ ∠D = 180° – 65° = 115°
∠C + ∠D = (100+115)° = 215° ← jwb