Geometry

Question Analysis

The main focus is determining the shape of the quadrilateral from its vertices' coordinates and using the appropriate formula to find its area.

Key Concept Explanation

For a rectangle, the area formula is , where  is the length and  is the width. In a coordinate plane, points with the same  - coordinate help find vertical side lengths, and points with the same  - coordinate help find horizontal side lengths.

Step - by - Step Solution

1. Points  and  have the same  - coordinate. The height .

2. Points

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