stereonet

Question 1

stereonet

Answer 1

• equatorial stereographic projection net
• used to represent 3d orientation of planes
• dip direction is phi and dip angle is theta

Question 2

method

Answer 2

• phi is dip direction and theta is dip angle
• mark dip direction on trace paper and rotate that point to either the W or E
• from the outer edge count in the amount specified by the dip angle and create that line.
• to create pole, extend a line that is in line with the center and the dip direction mark
• to create intersection line, extend line from intersection of circular lines to center