### Problem: How to find the area of the triangle formed by the points (1, 3),(3, -1),(-5, -5)

### Solutions:

The formula for finding the area of the triangle formed by

is

Applying the formula,we get

Therefore, the area of the triangle is

**20**.### List of Similar Problems with Complete Solutions

- How to find the centroid of a polygon
- How to find distance between two points
- Examples Problems with Solutions in Geometry

### NOTE:

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*credit: Todd*

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