1. The interior angles of a square are right angles or angles of 90 degrees.

2. The inadequacy of the interior angle win rate and the low rate in one win. 2. Tennis players in China to directly serve scoring rate and the rate of loss of direct superior opponents.

3. In a parallelogram, one interior angle is 3 times another. If the largest interior angle is x, find x.

4. A new re-triangulation method based on normalized minimum-vertex-distance was presented to avoid long and thin triangles, and it considered the vertex distance and the interior angle of triangle.

5. The result shows that it can quickly detect internal corner from real photos shot by every interior angle and practicability is strong.

6. We continue to propose a localized algorithm which can also handle queer condition, but using concept of graphic interior angle instead.