The answer will depend on where angles 3 and 7 are. And since you have not bothered to provide that information, I cannot provide a more useful answer.
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Angle side angle congruence postulate. The side has to be in the middle of the two angles
Its the Side, Angle, Side of a congruent postulate.
The SAS (Side-Angle-Side) postulate.
The A stands for angle.
Both state that the whole is equal to the sum of the component parts.