ARCA-SWISS started producing professional cameras in the early fifties. The new Swiss All-Round-CAmeras, ARCA-SWISS, rapidly gained an excellent reputation based on. their precision and handling in practical situations. The first large-format reflex cameras, 6x9cm and. 4x5 appeared in 1960 and were the rage of Photokina.
3. Vertices is another word for angles. A triangle has three sides and therefore three vertices, or angles.    Vertices are corners, so a triangle has three corners, th â¦ us three vertices.    3   Vertices is another term for angles. three    3; a vertice is where the two lines intersect    A triangle has 3 vertices. It also has three angles and sides.
Triangles can also be classified according to the number of congruent sides. The. slashes on the sides of a triangle mean those sides are congruent. 10. Like the right triangle, the parts of an isosceles triangle have. special names. The congruent sides are called legs. The angle. formed by the legs is the vertex angle, and the other two. angles are base angles. The base is the side opposite the vertex. angle.