1177 B.C. (Revised and Updated): The Year Civilization Collapsed

1177 B.C. (Revised and Updated): The Year Civilization Collapsed

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tolong bantu ya kak​

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tolong bantu ya kak​

Penjelasan dengan langkah-langkah:

A3 = A2 = 67° ( bertolak belakang )

B2 = A2 = 67° ( sehadap )

B3 = A2 ( luar berseberangan )

A1 = 180° - A2 = 180° - 67° = 113°

A1 dan A2 sudut sepihak

A1 = A4 ( bertolak belakang )

B1 = A1 ( sehadap )

B4 = A1 ( luar berseberangan )

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