The problem asks us to find the size of angle $n$. We are given a diagram with a straight line and another line intersecting it. The angle between these two lines is $28^{\circ}$. The angle $n$ is the remaining angle forming a semicircle with the $28^{\circ}$ angle.

1. Problem Description

The problem asks us to find the size of angle $n$. We are given a diagram with a straight line and another line intersecting it. The angle between these two lines is $28^{\circ}$. The angle $n$ is the remaining angle forming a semicircle with the $28^{\circ}$ angle.

2. Solution Steps

A semicircle has an angle of $180^{\circ}$. The angle $n$ and the given $28^{\circ}$ angle add up to form the semicircle. Therefore, we can write the equation:

$n + 28^{\circ} = 180^{\circ}$

To solve for $n$, we subtract $28^{\circ}$ from both sides of the equation:

$n = 180^{\circ} - 28^{\circ}$

$n = 152^{\circ}$

3. Final Answer

The size of angle $n$ is $152^{\circ}$.