What else would need to be congruent to show that abc def by aas (apex)

B.  

Step-by-step explanation:

In the given picture, we have two triangles having one side and one angle equal .

To prove the given triangles congruent by AAS theorem we need one more pair of angles congruent .

We can take option A.

but then the triangles wuill become conruent by ASA postulate not AAS.

Therefore, we need   to prove the given triangles congruent by AAS theorem.

since your problem is x^4 = 81, what you have to undeo is the "to the fourth power" part.

the inverse (opposite operation) of "to the fourth power" is "to the fourth root".

  (x^4) ^ ¼   = 81 ^ ¼  

  81 = 3^4     so (3 ^ 4) ^ ¼   =   3 ^ 1   = 3

by hand: (3 ^ 4) ^ ¼   =   3 ^ (4 x ¼) = 3 ^ 1   = 3   (when you take a power to a power, multiply the exponents.)

or, do it by calculator. one way of finding the fourth root is to use ^ (1/4)

step-by-step explanation:

17 1/3

step-by-step explanation: