Important Questions: Visualising Solid Shapes - Class 7 MCQ

8 edges -4 sides of square and 4 sides of triangular faces,            

The number effaces of a cube is 6.

Observe the given figures. In the figure in option [d], the shape is divided equally.    

The five triangles are, APQ, QXR, PZB, ABC and XYZ.       

Clearly, the two halves of rectangles when  joined edge to edge form a rectangle. 

This figure has 5 lines unlike all other figures which have four sides.    

 A cylinder has 3 faces  - two circular faces at the two ends and the third a curved face.

10 one-rupee coins piled up results in a cylinder.             

The Number of vertex in a Cube is 8

(i)Since cylinder is made up of two circles and a rectangle it matches with (d)
(ii)Since cone is made up of one circle and a triangle it matches with (a)
(iii)Since cuboid is made up of 6 rectangles,it matches with (b)
(iv) Since square pyramid is made up of 4 triangles and a square it matches with (c)

A cube of edge 4 cm has square faces of side 4 cm.

The sum of numbers on opposite faces is 7. So, the total on the face opposite to 4+3  is 3+4=7

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The number on opposite faces of a die add up to 7. So, the number on the face opposite to 5 is 2.

The height and width of the cuboid formed by placing 3 dice remain the same. Only length will be tripled.

The cross section of a cube is a square.

The 2-D image of a sphere (ball) is a circle.

A book is cuboidal whose shadow is a rectangle.

The pipe is cylindrical whose shadow is circular (front view).