A 3D figure can be drawn on a flat plane (piece of paper) by using perspective.
A horizon (horizontal) line is drawn across the page and a spot marked along the horizon. All side lines of the 3D shape must meet at the spot.
Perspective is much used by artists and architects, etc.
polyhedron
A cube is a good example of a 3D figure when drawn on paper and showing perspective.
A right angle triangle is a plane figure not a 3d one.
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No. Pyramids are three-dimensional, and hence cannot be drawn within a single plane.
A circle which is a plane figure, when drawn on a paper has 1 side.
There are many possibilities, and here are a couple: A dodecagonal prism (dodecagon = 12 sided plane figure); A heptagonal pyramid (heptagon = 7 sided plane figure).
A 3D figure has length x width x depth. It becomes a 2D figure once the removed surface is laid flat, having then only length x width. Another name is "Plane Figure."
Circle in 2D is a straight figure drawn on a plane. But if we take it as a sphere,it cannot be straight.
A plane figure is a geometric shape. A plane figure is known as a 2-dimensional shape because it has only length and breadth. The thickness of the plane figure is zero. Any shape that is drawn on paper is known as a plane figure. In the real world, there is no object that represents a plane figure.
a 2d shape A two dimensional figure can also be called a plane figure since it can be drawn in the two dimensional plane. Some examples include the triangle, the square, the circle, the pentagon, the hexagon, the parallelogram, the rhombus, etc.
Yes, if it is bound by plane figures, just add the area of each plane figure. If it has a curved surface, divide it into many small pieces, to approximate the area with small rectangles or triangles, then add them up.