07-8 Figure 7. 2 Strain interpretation (a) Randomly oriented lines b) Corresponding characteristic shape= circle (c) Projection function A(a) of random lines= projection function B(a)of circle (d) Deformed random lines (e) Corresponding characteristic shape strain ellipse (f) Projection function A(a)of deformed random lines= projection function B(a)of strain ellipse07 - 8 Figure 7.2 Strain interpretation. (a) Randomly oriented lines (b) Corresponding characteristic shape = circle (c) Projection function A(a) of random lines = projection function B(a) of circle (d) Deformed random lines (e) Corresponding characteristic shape = strain ellipse (f) Projection function A(a) of deformed random lines = projection function B(a) of strain ellipse