It's a 2D shape.
this is the shape of 2d cone
it a triangle as a 2d shape
You times the length by width, to get the area of the 2D shape.
A triangle as no other 2d shape can have 3 sides.
Terraria
Triangle & trapezium
trapezoid
It's a 2D shape.
A rhombus is a 2D shape.
2d
this is the shape of 2d cone
10 sided 2D shape is called a decagon 20 sided 2D shape is called a icosagon 30 sided 2D shape is a swimming pool 40 sided 2D shape is unknown 50 sided 2D shape is unknown 60 sided 2d shape is unknown 70 sided 2d shape is unknown 80 sided 2d shape is unknown 90 sided 2d shape is unknown 100 sided 2d shape is unknown 110 sided 2d shape is unknown 111 sided 2d shape is unknown 120 sided 2d shape is unknown 130 sided 2d shape is unknown
it a triangle as a 2d shape
The answer is zero. A 2D shape has no volume.
A 2D shape does have one face.
The shape of 2D is a flat surface.