SOLUTION
Given the question in the image, the following are the solution steps to answer the question.
STEP 1: State the Angle-Arc relationship
STEP 2: Interpret the given image
![\angle HIJ=(1)/(2)HJ](https://img.qammunity.org/2023/formulas/mathematics/college/ra1sdyx5gphj1w2kjrbqi6606irvx8igwg.png)
STEP 3: Find the required angle
By substitution
![\begin{gathered} \angle HIJ=(1)/(2)\cdot100 \\ \\ HJ=100 \\ \angle HIJ=(1)/(2)\cdot100=50\degree \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/jjuaabioiftdkci9rxse5sww9ll6iu398k.png)
Hence, the answer is 50°