50 pts please help A) The angles are adjacent and share the same vertex.

B)The angles are vertical and share the same vertex.

C)There isn’t enough information to say the triangles are congruent.

D) The angles are linear and share the same vertex.

B)The angles are vertical and share the same vertex.

Step-by-step explanation:

AC = CE since there is a single line on each side showing the sides are equal

BC = CD since there is a double line on each side showing the sides are equal

<ACB =< DCE because they are vertical angles and share the same vertex

We have Side angle Side  

step-by-step explanation:

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.