Figure 1. |
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Above we have a triangle graphed on a coordinate plane. Its three points (x, y) are displayed in a vertex matrix.

Matrix addition and subtraction can be used to translate a figure. To translate a figure is to move it without changing its size or shape.

Let's move triangle ABC two units to the left, and two units down.

First, we subtract "2" from each x value in the matrix.

Figure 2. |
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Next, we subtract "2" from each y value in the matrix.

Figure 3. |
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Now, we've translated the triangle:

Figure 4. |
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