Visualising Solid Shapes

schoolhelpbygunjan.wordpress.com | Visualising solid shapes | Definition of two dimensional figure | NCERTVisualising solid shapes,diagram, two dimensional figure,NCERT          Visualising solid shapes,diagram, two dimensional figure, NCERT

                Rectangle                                                         Square

schoolhelpbygunjan.wordpress.com | Visualising solid shapes | Definition | Three dimensional figure | NCERTVisualising solid shapes,diagram,three dimensional figure, NCERT         Visualising solid shapes,diagram,three dimensional figure,NCERT

                 Cuboid                                                                           Cube

schoolhelpbygunjan.wordpress.com | Visualising solid shapes | Parts of 3-D figure | NCERTVisualising solid shapes,diagram vertex, three dimensional figure, NCERT

Visualising solid shapes,parts of 3-D figure, NCERTschoolhelpbygunjan.wordpress.com | Visualising solid shapes | Definition | Edges | NCERTVisualising solid shapes,diagram,edges,NCERT

Visualising solid shapes,definition,edges, NCERTschoolhelpbygunjan.wordpress.com | Visualising solid shapes | Definition | Faces | three dimensional figure | NCERTVisualising solid shapes,diagram,faces,NCERTVisualising solid shapes,definition,faces, three dimensional figure, NCERTschoolhelpbygunjan.wordpress.com | Visualising solid shapes | Definition | Net | NCERTVisualising solid shapes,diagram,net,NCERTVisualising solid shapes,definition,oblique sketch,NCERTVisualising solid shapes,diagram,oblique sketch, three dimensional figure, NCERTVisualising solid shapes,definition,isometric sketches,NCERTVisualising solid shapes,A 5(a),Ex - 15.2,diagram(ii),NCERT

Visualising solid shapes,definition,slicing game,cross section,NCERT

Visualising solid shapes,definition,slicing game,cross section,diagram, NCERT

                                  Horizontal cut of the papaya

Visualising solid shapes,definition,slicing game,cross section, NCERT

Visualising solid shapes,definition,slicing game,cross section,diagram,NCERT

             Vertical cut of the papaya

Visualising solid shapes,definition,shadow play,NCERT

Visualising solid shapes,diagram,shadow play,NCERT

 

Visualising solid shapes,definition,certain angle play,NCERT

Visualising solid shapes,diagram front view, NCERT

                                                  Front view of telephone

Visualising solid shapes,definition,certain angle play,back view,NCERTVisualising solid shapes,diagram back view, NCERT

                                Back view of telephoneVisualising solid shapes,definition,certain angle play,side view,NCERTVisualising solid shapes,diagram side view, NCERT

                                Side view of telephone

Visualising solid shapes,definition,certain angle play,top view,NCERTVisualising solid shapes,diagram top view, NCERT

                                 Top view of telephone

(7) A map is a pictorial presentation of a definite place.

Eg:- Map of school, map of market, map of city, map of country etc.

(8) A 3D shape with flat polygonal faces, straight edges and sharp corners (vertices), is known as polyhedra. Plural of polyhedra is known as polyhedron.

Eg:- Square, cubes, pyramid, prism etc.

(i) Prism is a polyhedron whose base and top are congruent polygons and whose lateral faces are parallelogram in shape. A prism is named after its base, as a hexagonal prism has hexagon base.

Prism

(ii) A pyramid is a polyhedron whose base is a polygon of any number of sides and whose lateral faces are triangles with a common vertex. A pyramid is named after its base, as a hexagonal pyramid has hexagon base.

Pyramid

(9) Types of polyhedron

(i)Convex polyhedron are those polyhedron that have no portions of their diagonals in their exteriors.

Eg:-

Visualising solid shapes,diagram,oblique sketch, three dimensional figure, NCERT

(ii) Concave polyhedron are those polyhedron that have some portion of their diagonal in the exteriors.

Eg:-

convex polyhedron

(iii)The polyhedron that have faces made up of regular polygons and the same number of faces meet at each vertex, are called regular polyhedron.

Eg:-

Visualising solid shapes,diagram,edges,NCERT

(iv) The polyhedron that have faces made up of irregular polygons and the same number of faces do not meet at each vertex, are called irregular polyhedron.

Eg:-

schoolhelpbygunjan.wordpress.com | Irregular polyhedron

Euler’s Formula is a relationship among faces (F), vertices (V) and edges (E) of polyhedron.

Euler’s Formula

F + V – E = 2

Helping Topics

NCERT solutions,class 7

NCERT solutions, class 8

Picture1

Leave a comment