If angle 1 is congruent to angle 2 and angle 2 is congruent to angle 4 what property allows you to state the angle 1 is congruent to angle 4

Several paint mixtures are made by mixing blue paint and white paint. paint colors blue paint white paint mixture a 5 cups 12 cups mixture b 6 cups 6 cups mixture c 4 cups 12 cups mixture d 5 cups 6 cups which mixture has the highest ratio of blue paint to white paint