Answer:
x = 10
y = 6
Step-by-step explanation:
If ∆ABC is congruent to ∆GEF, therefore their corresponding side lengths would be equal to each other. Thus:
x - 8 = 2 (corresponding sides of both triangles are equal)
Add 8 to both sides
x - 8 + 8 = 2 + 8
x = 10
Also:
x - y = 4 (corresponding sides of both triangles are equal)
Plug in the value of x
10 - y = 4
10 - y - 10 = 4 - 10
-y = 4 - 10
-y = -6
-y/-1 = -6/-1
y = 6