Answer:
Well i dont know what all the sides/angles are called but no they are not congruent.
Step-by-step explanation:
Congruent, means for the 2 objects, shapes, etc. to be exactly the same. If you look at the triangles, they are not the same shape of triangle.
An algebraic expression is an expression that includes constants, variables, and the algebraic operations (add, subtract, multiply, divide.
#4 is b. you use the law of sines to find the missing angles and side lengths.