tolong jelaskan serta caranya

<p>-sudut dalam sepihak-&nbsp;</p><p>sudut K dan sudut N = 180° (jika dibuat total)</p><p>jika ditanya sudut N = 180° - sudut K&nbsp;</p><p>sudut N &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 180° - 42°&nbsp;</p><p>sudut N &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 138°</p><p>jawaban c. 138°&nbsp;</p><p>&nbsp;</p>