yg nomor 2, 3, dan 4 kak..plis no ngasal dan pakai cara
Jawaban:
2. sudut KLN dengan MLN berjumlah 180°
[tex]5x + 4x + 9 = 180 \\ 5x + 4x = 180 - 9 \\ 9x = 171 \\ x = \frac{171}{9} \\ x = 19[/tex]
MLN =
4x + 9 = 4(19) + 9
76 + 9 = 85°
KLN
5x = 5(19) = 95°
3. sudut yg berseberangan nilainya sama
3x + 60 = 120°
3x = 120 - 60
x = 60 ÷ 3
x = 20°
z = 180° - 120° = 60°
no 4 klo garis lurus pasti jadinya siku" (90°), kenapa 75° ya yg bawah?
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