Figure E5.7 is a graph that visually represents the feasible frontier and a set of indifference curves for a scenario where Angela has Cobb-Douglas preferences. The figure highlights that the points on different indifference curves where the slope matches that of the feasible frontier occur at different values of free time ($t$). This visual aid is part of an example used to determine the Pareto efficiency curve. The feasible frontier in the graph is derived from the production function $f(h) = (48h - h^2)/40$, while Angela's indifference curves are based on a Cobb-Douglas utility function where the parameter $\alpha$ is set to 8/13.