Question

Can i please get help?

Answer 1

Let us suppose that angle G is x, so angle F will also be x since this is an isosceles triangle and the sides EG and EF are equal...

So,

`\tt \: 55 \degree + x + x = 180 \degree \\ \tt \: 55 \degree + 2x = 180 \degree \\ \tt \: 2x = 180 - 55 \\ \tt \: 2x = 125 \\ \boxed{ \tt \: x = 62.5 \degree}`