Penjelasan dengan langkah-langkah:
a. sisi DC = sisi AB
sisi AD = sisi BC
b. sudut D = sudut B
sudut A = sudut C
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Penjelasan dengan langkah-langkah:
a. sisi DC = sisi AB
sisi AD = sisi BC
b. sudut D = sudut B
sudut A = sudut C