right-handThe triangles are similar if, the ratios of their sides are equal


On the left-hand side

and in the right-hand side, we have

The left-hand side equals the right-hand side; therefore, the triangles are similar.
1.

so

Answers B and D.
2.

Answer D.
3.
The same as point 2. Answer D.
4.
Answer C.
The area of the shaded region would be 64m²
Answer:
idk that's weird ( I'm just trying to get more points)