October 2018 1 37 Report
Pada gambar di samping, ABCD adalah persegi panjang. panjang diagonal AC = 28cm dan (DAC = 60°.
Tentukan
A. 2 pasang segitiga sama kaki yang
kongruen,
B. panjang DE dan BD,
C. (EAB, (AEB, dan (BEC

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