Problem
2) \[ \begin{array}{l} \triangle J K I \cong \triangle J K G \\ \angle I \cong ? \end{array} \]
Solution
Step 1 ：\( \triangle J K I \cong \triangle J K G \)
Step 2 ：\( \angle I \cong \angle G \)
Step 1 ：\( \triangle J K I \cong \triangle J K G \)
Step 2 ：\( \angle I \cong \angle G \)
