Asked by Evelyn Zhang

Find the measures of the angles in ∆ABC if m∠A : m∠B:m∠C=2:3:4.
Answered by R_scott
the sum of the angles of a triangle is 180º

2 n + 3 n + 4 n = 180º

9 n = 180º ... n = 20º

40º + 60º + 80º = 180º
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