Answer:
3x-2
Step-by-step explanation:
The correct answer is 5, 7, 9.
1. squaring
2. four triangles and the square with side length "c"
3. big square (side length: a+b)
The answer is D. None of these.
As answer A. would be angle 6,4 and 5,3
B. Angles 6,3 and 5,4
C. Angles 8,4 7,5 5,1 6,2
