Tissot’s Indicatrix: Measuring Distortion in Map Projections
Tissot’s indicatrix is a mathematical contrivance used in cartography to characterize local distortions in map projections.
Teaching Context When it Comes to Map Projections
Context is needed in teaching about distortion created by different map projections.
Geo Quiz: Which Country is Bigger?
This quiz challenges you to figure out which country is bigger based on a world map using the Mercator map projection.
The Map Projection of the United Nations’ Flag
The United Nations flag with a white map on top of a light blue background, is universally recognized. Learn about the map projection used for the logo.
Cordiform: Heart-Shaped Map Projections
Heart shaped map projections are known as cordiform map projections which is derived from the Latin “cor” for heart and form for shape.
Types of Map Projections
Three common types of map projections are cylindrical, conic, and azimuthal.