Vertex angle the sum of the interior angles is π("n" − 2) radians or 180("n" − 2) degrees. Because more than two lines in a polytope can intersect in the same space, the number of vertex angles from any given vertex is not always one. Because of this, it is sometimes necessary to specify not only the vertex, but also the specific line segments that make up the angle. Vertex angle In geometry, a vertex angle is an angle associated with a vertex of an n-dimensional polytope. Often a vertex angle of a polygon is referred to simply as an angle of
Simca Type 180 Renault/Peugeot Douvrin engine, but the displacement of the Simca 180 2.2-litre was slightly less. Later, this engine was also turbocharged, for use in the Citroën BX4TC and Peugeot 505 Turbos as the block was stronger than the Peugeot engine. Applications: Simca Type 180 The Type 180 is an automobile straight-4 engine produced in the 1970s. It was an OHC design. These engines (1,639/1,812 cc) were used in the Chrysler 160/180, a car also sold under a multiplicity of other names. Applications: The 1,981 cc Type 180 was most common. It was used in various Chrysler Europe and Simca models. Applications: