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Verified answer
Penyiku = 48°sudut = 90° - penyiku
sudut = 90° - 48° = 42°
pelurus = 180° - sudut
pelurus = 180° - 42° = 138°
Verified answer
Kelas 7 MatematikaBab Garis dan Sudut
a + penyiku = 90°
a + 48° = 90°
a = 90° - 48°
a = 42°
a + pelurus = 180°
42° + pelurus = 180°
Pelurus = 180° - 42°
Pelurus = 138°