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.
Those crafty little weasels. If two lines are perpendicular to the same line, we know that they're parallel. If we take another look at the perpendicular lines, we'll see that we have four sets of parallel lines here as well: a || d, b || g, c || f, and e || h. Seeing these relationships among segments and angles makes it possible to find angle measures and side lengths in polygons.