Heath ID: I.cn.4

G.10

Things which coincide with one another are equal to one another.

Required for

G.17, G.19, G.20, G.21, G.23, G.24, G.25, G.26, G.27, G.28, G.30, G.31, G.32, G.33, G.34, G.35, G.36, G.38, G.39, G.42, G.43, G.44, G.45, G.46, G.47, G.48, G.49, G.50, G.51, G.52, G.11, G.53, G.54, G.55, G.56, G.57, G.58, G.59, G.60, G.61, G.12, G.14, G.15, G.16