A gusset is a triangular or square piece of fabric inserted into a seam to add breadth or reduce stress from tight-fitting clothing.
1 is d
2 is c and please just ask one question at a time, its annoying to have a lot.
<span>A Compositional Triangle is utilized in the Rape of the Sabine Women by Nicolas Poussins. It borrows a renaissance technique for structuring a balanced composition. </span>
Das means to tie to bind together is bind saam