Angulo externo maior que o interno - parte 1
1. Considere, no triângulo ABC, um ângulo externo e um ângulo interno não adjacente a ele.
![Image](https://www.geogebra.org/resource/wrhakyrm/tUKHsG1hwYv18EL8/material-wrhakyrm.png)
Analisando a figura, o ângulo externo parece ser maior do que o interno, ou seja, aparentemente . Mas será que essa relação entre os ângulos externo e interno é sempre válida para todos os triângulos? Para responder a essa pergunta, vamos realizar algumas construções no triângulo ABC.
Na figura abaixo, M é o ponto médio do lado AC e o segmento BM foi prolongado até o ponto P, de modo que se tivesse BM = MP.
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a) AD =
b) DE =
c) EF =
d) FC =
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