Question

Señora Cruz will use four triangles on the door decor. how many square centimeters of paper will Señora Cruz use to create the triangles​

Answer 1

It might help if you added a picture of what the question is!!

here who invented the triangle

Blaise Pascal

It was reinvented in 1665 by French mathematician Blaise Pascal in the West, where it is known as Pascal's triangle. The triangle can be constructed by first placing a 1 (Chinese “—”) along the left and right edges.