The problem asks us to find the size of angle $n$. The given diagram shows that angle $n$ and an angle of $36^{\circ}$ together form a straight line, which is $180^{\circ}$.

1. Problem Description

The problem asks us to find the size of angle $n$. The given diagram shows that angle $n$ and an angle of $36^{\circ}$ together form a straight line, which is $180^{\circ}$.

2. Solution Steps

A straight line forms an angle of $180^{\circ}$. Therefore, the sum of angle $n$ and the $36^{\circ}$ angle is $180^{\circ}$.

We can write this as an equation:

$n + 36^{\circ} = 180^{\circ}$.

To find the value of $n$, we subtract $36^{\circ}$ from both sides of the equation:

$n = 180^{\circ} - 36^{\circ}$.

$n = 144^{\circ}$.

3. Final Answer

The size of angle $n$ is $144^{\circ}$.