31.9k views
2 votes
I need to know if it’s A B C Or D

I need to know if it’s A B C Or D-example-1
User Remmy
by
3.4k points

1 Answer

7 votes

Given:

The quadrilateral HIJK is inscribed in circle C.


m\angle IJK=112^(\circ)

As we know that, the opposite angles in a cyclic quadrilateral add up to 180 degrees.


\begin{gathered} m\angle IJK+m\angle IHK=180^(\circ) \\ 112^(\circ)+m\angle IHK=180^(\circ) \\ m\angle IHK=180^(\circ)-112^(\circ) \\ m\angle IHK=68^(\circ) \end{gathered}

Answer:


m\angle IHK=68^(\circ)

User Maxim Masiutin
by
3.8k points