Respuesta :

13. <HJK <KJL <LJM
15.<KJH
13. acute angles are smaller than 90°, and they are:
<HJK
<KJL
<LJM

14. find m<KJM that is: KJL + LJM = 60 + 30 = 90°

15. Adjacent to LJM is LJK