<p>An old Direct3D book says </p>

<blockquote>
  <p>"...you can achieve an acceptable frame
  rate with hardware acceleration while
  displaying between 2000 and 4000
  polygons per frame..."</p>
</blockquote>

<p>What is one polygon in Direct3D? Do they mean one primitive (indexed or otherwise) or one triangle?</p>

According to this
page
, a polygon is n-sided in Direct3d.
In C#:
```
```
public static Mesh Polygon(
    Device device,
    float length,
    int sides
)
```
```