Rectangling of Triangles - (revisited)

Please note that plastic colors vary.

This clever revisit of the "Rectangling of Triangles" (the original copyrighted in 2007) includes 6 different objectives:

Take the elements out of the frame to solve the following using all 8 pieces:
1) Make a rectangle
2) Make a triangle
3) Make two triangles simultaneously
4) Make three triangles simultaneously
5) Make four triangles simultaneously
6) Make a symmetrical n-angle, where "n" equals: 3, 4, 5, ..., 15, 16.

Created by Russian designer Vladimir Krasnoukhov.