A sloping board or ramp is an example of a simples machine called ____ plane.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the name of a simple machine that is represented by a sloping board or ramp.

2. **Identifying the Simple Machine**: A sloping board or ramp is used to make it easier to move objects from a lower height to a higher height.

3. **Recognizing the Characteristics**: This type of machine allows for lifting heavy objects with less effort by using a slope instead of lifting them straight up.

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