Eve
True
sustainable development.
Moraine.
Corrugated sheet metal roofs are structurally stronger than flat sheet metal.
I don't know thy there are triangular roofs in Mexico, but I know that there are flat roofs i Mesopotamia, because it gets hot there sometimes, including night, so they'd sleep on their roof for a breeze.
Eve
They are called thatched roofs.
avees
We call him Plumber.
A leaf's edge is called its margin.
The centre of a circle is simply called the cnetre. The edge may called the perimeter, the circumference or the edge.
The top edge of a glass or cup is called the rim.
The outer edge of a circle is called the circumference.
It is called an edge: there is no special name.
The edge of a mountain cliff is called a precipice.
Iron Age people covered their roofs with straw because it was readily available, lightweight, and helped to insulate their homes. Straw was also a cheaper option compared to other roofing materials, making it a practical choice for protecting their homes from the elements.
The formation that hangs from roofs is called an icicle. It occurs when melted snow or ice drips from a surface and freezes again in the shape of a long, pointed structure.