What is the regular angle that a railroad switch outputs the curve at?

Answer With switches, these angles are referenced to a portion of the switch, not the movable switch points where one may think, but is rather a ratio found in the switch "frog." The frog is the portion ... Read More »

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How to Use a Protractor to Find the Angle Measurements in a Regular Hexagon?

Protractors are used to find both interior and exterior angles in geometric shapes. They are semicircular, with two sets of numbers running in opposite directions from 0 to 180 along their curved e... Read More »

How to Calculate the Measure of the Central Angle of a Regular Ten Sided Polygon?

A central angle of a polygon is the angle created from the center point of the polygon to two adjacent vertices. A regular polygon is defined as a polygon where all sides and interior angles are co... Read More »

How does height affect angle ie a 90 degree roof angle at a 20 degree pitch with a building That projects 10 degrees what angle does the building meet the roof?

What is the difference between "28mm wide-angle" and "24mm ultra wide-angle lens"?

If you own a Sony, Pentax or Nikon DSLR the 24mm lens will have the equivalent angle of view of a 36mm lens on a full-frame DSLR while the 28mm lens will have the equivalent angle of view of a 42mm... Read More »