The problem asks us to find the size of angle $g$ in the given circle. The circle is divided into three angles: $g$, $100^\circ$, and $150^\circ$.

1. Problem Description

The problem asks us to find the size of angle $g$ in the given circle. The circle is divided into three angles: $g$, $100^\circ$, and $150^\circ$.

2. Solution Steps

The sum of the angles around a point (or in a circle) is $360^\circ$. Therefore, we can write the equation:

$g + 100^\circ + 150^\circ = 360^\circ$

Now, we can solve for $g$:

$g = 360^\circ - 100^\circ - 150^\circ$

$g = 360^\circ - 250^\circ$

$g = 110^\circ$

3. Final Answer

The size of angle $g$ is $110^\circ$.