The problem asks to find the size of angle $h$ given that the total angle is a full circle (360 degrees) and one part of the angle is 135 degrees.

1. Problem Description

The problem asks to find the size of angle $h$ given that the total angle is a full circle (360 degrees) and one part of the angle is 135 degrees.

2. Solution Steps

A full circle is $360^{\circ}$. The angle $h$ and the given angle $135^{\circ}$ together form a full circle. Therefore,

$$h + 135^{\circ} = 360^{\circ}$$

To find the angle $h$, subtract $135^{\circ}$ from both sides of the equation:

$$h = 360^{\circ} - 135^{\circ}$$

$$h = 225^{\circ}$$

3. Final Answer

The size of angle $h$ is 225 degrees.