Question: In ΔABC, if ∠A ≅ ∠B and AB ≅ AC, prove that BC ≅ AC.
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Math question: In ABC and DEF, if AB = DE, BC = EF, and ∠B = ∠E, what can be concluded about the two triangles?
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What is the average number of books read by 30 students in a month if the data set consists of {10, 8, 12, 15, 7, 9, 11, 13, 14, 6, 10, 10, 12, 9, 12, 8, 7, 10, 11, 13, 10, 8, 9, 11, 12, 8, 7, 9, 13, 10}?