Answer:
b) 92
Explanation:
1. if according to the condition the triangle is equilateral, then every inside angle (m∠F=m∠G=m∠H) is 60°.
2. it is possible to substitute the value 60 (F=60) into the given equation:
![60=((Z)/(2)+14);](https://img.qammunity.org/2022/formulas/mathematics/high-school/a7ui95w8z1ak2vc0noyp09exepdu83bpe5.png)
3. if to solve the equation above, then Z=92