Answer:
66°
Step-by-step explanation:
By the Postulate of intersecting chords inside a circle.
[tex] m\angle GEF = \frac{1}{2} \times \bigg [m\widehat{(GF)} +m\widehat{(UH)}\bigg] \\\\
\therefore m\angle GEF = \frac{1}{2} \times \bigg[72\degree +60\degree \bigg] \\\\
\therefore m\angle GEF = \frac{1}{2} \times \bigg[132\degree\bigg] \\\\
\huge \red {\boxed {\therefore m\angle GEF = 66\degree}} [/tex]
