Hello students. In this session we are going to discuss ob the topic of Properties of 2 d and Properties of 3 d figures. But before starting it you should be familiar with the terms of 2D and 3D. 2D is the shapes that can be drawn on the plane paper and 3d shapes can not be and to be more precise 2d shapes is 2d dimension and 3d shapes is 3 dimensions. We can not handle the 2d shapes in our hand because they are the flat shapes but we can handle the 3d shapes.
The most important difference between them is that a 3d shapes have three axises such as x, y and z whereas 2d shapes have just two axises that is x and y. (know more about cbse sample papers, here)
Let’s talk about the properties or dimension of 2 d and 3 d figures.
2d figures has two properties or dimensions such as length and width and 3d figures has three properties or dimensions such as length, width and depth.
Circle, triangle, square, rectangle and any polygons follow the 2d properties, because they are 2d shapes.
Sphere, prism, cuboids, cube, cylinder, pyramid and cone follow the 3d properties because they are 3d shapes.
Although every shape of 2d and 3d have different properties for example: -
Some 2d Shapes Properties
Square 4 sides, closed figure, 2 sets of parallel line
Triangle 3 sides, closed figure
Rhombus 2 sets of parallel line, polygon, 4 sides of equal measure
Some 3d Shapes Properties
Cube 6 congruent faces, 12 vertices,
Cylinder 2 circle faces
Rectangular prism 6 faces, 8 vertices
Although we have so many 2d and 3d figures and shapes, but here it is not possible to discuss all of them.
I hope that make sense.
In the next session we will discuss about Complementary/supplementary angles.
The most important difference between them is that a 3d shapes have three axises such as x, y and z whereas 2d shapes have just two axises that is x and y. (know more about cbse sample papers, here)
Let’s talk about the properties or dimension of 2 d and 3 d figures.
2d figures has two properties or dimensions such as length and width and 3d figures has three properties or dimensions such as length, width and depth.
Circle, triangle, square, rectangle and any polygons follow the 2d properties, because they are 2d shapes.
Sphere, prism, cuboids, cube, cylinder, pyramid and cone follow the 3d properties because they are 3d shapes.
Although every shape of 2d and 3d have different properties for example: -
Some 2d Shapes Properties
Square 4 sides, closed figure, 2 sets of parallel line
Triangle 3 sides, closed figure
Rhombus 2 sets of parallel line, polygon, 4 sides of equal measure
Some 3d Shapes Properties
Cube 6 congruent faces, 12 vertices,
Cylinder 2 circle faces
Rectangular prism 6 faces, 8 vertices
Although we have so many 2d and 3d figures and shapes, but here it is not possible to discuss all of them.
I hope that make sense.
In the next session we will discuss about Complementary/supplementary angles.
No comments:
Post a Comment