1. The relevant obtuse angle principle is proved.

2. Let be the obtuse angle between two adjacent faces of the solid.

3. Use the vector dot product to find the obtuse angle between two diagonals of a cube.

4. Obtuse triangle: One of the three angles is an obtuse angle. The other two are acute angles.

5. The power supply voltage line includes an edge part formed in an obtuse angle .

6. Tom: Let's try to approach our awareness of what guilt is from perhaps a slightly obtuse angle .

7. Firstly,(http://) it demonstrates the reason of changing the right angle plate into an obtuse angle one and the influence of the lifting plate 's geometry shape on the cooling effect.

8. It is indicated that the deformation failure is significantly influenced by a key position of obtuse angle between roadway sections and incline directions of rock strata.

9. Further, a cathode voltage line and a scan driver each may include an edge part formed in an obtuse angle .

10. When the anterior horn of lateral ventricles appears, the extended lines of bilateral anterior rami of lateral sulcus intersect on the superior aspect of the genu of corpus callosum by obtuse angle.

11. It has been demonstrated that the design with an obtuse angle shape at the volute throat delivered the optimal hydraulic efficiency due to the improvement of the flow conditions inside the volute.