Triangle classification chart
A triangle plot is a graph of 3 variables most often used in geologic studies to " Triangle Plot Options", then check the "Draw USDA Soil Classifications" box. This lesson explores the classification system used to identify animals. Look at the pictures of these animals, then fill in the chart below: (We've given you an example.) Collage of You can imagine these levels as an upside-down triangle . Soil classification systems are used to class soils Use textural triangle to classify soil Because P200>10%, not A-3. ▫ So must be A-2 soil, use plasticity chart.