Australian and regional high-quality pan evaporation timeseries are available from 1975 for annual, seasonal and monthly evaporation totals, as well as for southern and northern wet season totals.

Australian average pan evaporation maps are available for annual and seasonal evaporation. Long-term averages have been calculated using all records that are least 10 years long during the ...

Two-dimensional (2D) shapes are completely flat. They have two dimensions – length and width. A polygon is a closed 2D shape with straight sides that meet at vertices. Polygons can be regular or ...

Learn how to solve problems about angles made between straight lines. Angles in polygons Learn how to use a formula to find out the internal angles within a polygon. Angles in triangles Learn how ...