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.
There are only two sets of congruent adjacent sides. There is only one set of congruent angles. It can be kind of difficult to keep track of what is what, so here it is charted out: And, if you're really a visual person, here's a Venn diagram. As you can see, all of these are quadrilaterals, but rectangles and rhombi are also parallelograms, and squares are also parallelograms, rectangles, and rhombi. Kites and trapezoids are lonely islands floating by themselves.