Fm∠a = m∠b and m∠a + m∠c = ∠d, then m∠b + m∠c = ∠d. which property is shown? reflexive property substitution property symmetric property transitive property

Plzz ! if you were constructing a triangular frame, and you had wood in the length of 4 inches, 4 inches, and 7 inches, would it make a triangle? would you be able to create a frame from these pieces of wood? yes or no? = explain your mathematical thinking/show your work: