A.The triangles are similar but not congruent
Step-by-step explanation:
In a congruent traingle:
the both triangles are same in shape and size
There are five theorems to see if the triangles are congruent
and neither particularly applies here
sss: the sides are not equal
as none of the sides are equal, then despite the angles, congruence is not possible
However it is evident that one of the triangles is proportionally bigger than the other but similar. Hence A is correct.
(4*3)+-4=8, this is just how to put it in the equation
Step 2 and all that follows is wrong because it should equal 20
An octagon has 8 lines of symmetry.
So, your answer is going to be A.
Hope I helped!