1-Draw a light triangle shape as a guide.
2-Round the corners shown.
3-Erase the triangle points as seen below.
4-Draw three short lines inside of the shape as shown.This will create three 90 angles.
5-Add three more lines next to the ones drawn in step 4.
6-Draw three triangles rotating around the shape clockwise.
7-Draw an angled line coming from the triangle to create three arrows.
8-Close the angles created in step 5 with curved lines as shown.
9-Erase guides, Fill in solid or shade as desired.