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Question
equivalent experience_ma.912.lt.4.10
if ∠a and ∠b are complementary and ∠a and ∠c are complementary, then ∠b = ∠c
this is a(n) statement.
i can valid, invalid using
Step1: Definir complementarios
Dos ángulos son complementarios si la suma de sus medidas es 90°. Si $\angle A+\angle B = 90°$ y $\angle A+\angle C=90°$, entonces podemos despejar $\angle B$ y $\angle C$.
Step2: Despejar ángulos
De $\angle A+\angle B = 90°$, tenemos $\angle B=90° - \angle A$. De $\angle A+\angle C = 90°$, tenemos $\angle C=90° - \angle A$.
Step3: Comparar ángulos
Como $\angle B=90° - \angle A$ y $\angle C=90° - \angle A$, entonces $\angle B=\angle C$.
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valid