it's 3 triangles
A triangle is the only polygon which is rigid. Any polygon with 4 or more sides can be skewed ito another shape and so are not rigid. The way around this is to brace it which is equivalent to making the shape into triangles. So one of the main function of triangles is to give rigidity to structures such as electricity pylons, bridge ironwork.
freehand - is a technique of making a drawing without the use of drawing instrument mechanical - is a technique of making a drawing with the use of drawing instrument
freehand - is a technique of making a drawing without the use of drawing instrument mechanical - is a technique of making a drawing with the use of drawing instrument
A hexahedron. Which may also be known as a pentagonal pyramid. Although it could also be a horizontal pentagon with a vertical pentagonal band formed by ten triangles (aternately facing up and down), topped by five trianles meeting at an apex: a 16-faced polyhedron. Or, of course, it could have two bands of vertical facing triangles - making a 26-hedron, etc.
The study/ art of drawing or making diagrams
by making stop sign
I think what you are asking is "What type of triangle is formed within a pentagon?" That depends on whether the pentagon is either regular or not, and also by how you plan on making the triangle, specifically between which diagonals of the pentagon. There is not enough information to answer this question.
Additive drawing is the type of drawing most people considerwhen the topic of drawing comes to mind, and it includes making marks that indicate theedges of forms - called contour lines, and making marks to indicate shadow.
This depends on the type of polygon making up the base of the pyramid. For a pyramid with a square base, like the famous Egyptian pyramids, there is a total of 900 degrees. If the base is a pentagon, 1440 degrees. If the base is a hexagon, 1800 degrees, etc.
when you do a drawing using only lines
If it's a regular polygon, it's making a good stab at being a circle!
A scale drawing.