marabunta

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About marabunta

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  1. Cuma diketahui sudut itu

    Diberikan segitiga sama kaki $ABC$ dengan $AB = BC$ dan $\angle ABC = 80^\circ$. Titik $P$ pada interior $ABC$ sehingga $\angle ACP=30^\circ$ dan $\angle PAC= 40^\circ$. Berapakah besar $\angle BPC$?