QUESTION IMAGE
Question
what is the value of the missing angle (?) .
Step1: Usar la propiedad de ángulos externos
El ángulo externo de un triángulo es igual a la suma de los dos ángulos internos no adyacentes. Entonces, el ángulo desconocido \( \theta = 30^{\circ}+20^{\circ} \)
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\( 50^{\circ} \)