Jawaban:
Penjelasan dengan langkah-langkah:
karna garis sejajar dan garis yg memotong sama vertikal, maka
a° + 180 = (90-50) + (90-30)
a° = 180 - 40+50
a° = 90°
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Jawaban:
90°
Penjelasan dengan langkah-langkah:
karna garis sejajar dan garis yg memotong sama vertikal, maka
a° + 180 = (90-50) + (90-30)
a° = 180 - 40+50
a° = 90°