100 points! Will mark brainliest to correct answer. I only want a good answer please.. random answers will be reported

They use the same triangle but in different sizes to make the big triangle.

Step-by-step explanation:

The white triangles all have the same shape, they are similar. The transformations are basically sizing them down or making the total area smaller. There are large ones in the middle and as it goes out the white triangles become smaller.

i belive those are the ones that are under 90 degreese.

10 down (bang1)

5 up

5down (2)

2.5 up

2.5 down (3)

1.25 up

1.25 down (4)

now add them up : )

hoped i lol