Respuesta :

Answer:

180°

Step-by-step explanation:

[tex] m\angle JBG = 90\degree [/tex]... (given]

[tex] m\angle GBH = 180\degree - 90\degree= 90\degree [/tex]

(linear pair angles)

[tex] \implies \widehat{JGH} = 180\degree [/tex]

[tex] \implies \widehat{HIJ} = 360\degree - 180\degree [/tex]

[tex] \implies \widehat{HIJ} = 180\degree [/tex]