how can I get this answer SolutionThis can be solved using T

how can I get this answer ?

Solution

This can be solved using The Transitive Property of Congruence

The Transitive Property of Congruence states that:

This is really a property of congruence, and not justangles. If two segments are each congruent to a third segment, then they are congruent to each other, and if two triangles are congruent to a third triangle, then they are congruent to each other.