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Kelas 7 MatematikaBab Pola Bilangan
Keliling segitiga = 180
a + a + 1 + a + 2 = 180
3a = 180 - 3
a = 177/3
a = 59 cm
a + 1 = 59 + 1
a + 1 = 60 cm
a + 2 = 59 + 2
a + 2 = 61 cm
Panjang sisi terpendek = 59 cm