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A three-dimensional figure is a figure that has depth, width, and height. Three-dimensional geometry, or space geometry, is used to d...
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Volume is the quantity of three-dimensional space enclosed by some closed boundary, for example, the space that a substance ( solid , liqu...
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Area is a quantity that expresses the extent of a two-dimensional shape in the plane. Area can be understood as the amount of material wit...
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Oswald Veblen said: "MATHEMATICS is one of the essential emanations of the human spirit, a thing to be valued in and for itself, like... -
Lets us learn more about 2-dimensional & 3-dimensional shapes, just click http://www.bgfl.org/custom/resources_ftp/client_ftp/ks2/m...
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A perimeter is a path that surrounds an area. Perimeter of square = a + a + a + a = 4a Perimeter of rectangle = (a+a) + (b+b) = 2a + ...
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For many years, people are told stories by drawing and painting the pictures. Therefore, SHAPE & SPACE are the basic of geometry. T...
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A square has 4 straight sides. All the sides are equal in length. A rectangle has 4 straight sides. The opposite sides are equal in lengt...
Area is a quantity that expresses the extent of a two-dimensional shape in the plane.
Area can be understood as the amount of material with a given thickness
that would be necessary to fashion a model of the shape, or the amount
of paint necessary to cover the surface with a single coat.
The area of a shape can be measured by comparing the shape to squares of a fixed size. In the International System of Units (SI), the standard unit of area is the square metre (written as m2), which is the area of a square whose sides are one metre long.
square = a 2 
rectangle = b h
parallelogram = bh
trapezoid = h/2 (a + b)
| triangle = |  |
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one half times the base length times the height of the triangle |
| equilateral triangle = |  |
A perimeter is a path that surrounds an area.
Perimeter of square = a + a + a + a = 4a
Perimeter of rectangle = (a+a) + (b+b) = 2a + 2b
Perimeter of triangle = a + b + c
A square has 4 straight sides. All the sides are equal in length.
A rectangle has 4 straight sides. The opposite sides are equal in length.
A triangle has 3 straight sides. The sides can be equal or different in length. 
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For many years, people are told stories by drawing and painting the pictures. Therefore, SHAPE & SPACE are the basic of geometry. They play a very important role in our daily life ~
Shapes with no thickness, which have just length and width are known as two-dimensional shapes. The most common objects that we see and handle everyday are those with three-dimensions which are called solid shapes.
