Q1.
Q2.
Q3.
Q4.
Define faces, edges and vertices of solid shapes.
How many faces, edges and vertices does a cuboid have? Draw and explain.
Does a cylinder have a vertex? How many curved or flat edges and faces does the
cylinder have?
What is net?
Q5.
Q6.
There is a cuboid of
Draw its net.
What will be the shape of the net of the given figure?
Q7.
Which of these nets can be used to make a cube?
Q8.
Q9.
Write true or false for the following statements:
(i) A cone has one vertex.
(ii)A sphere has one edge.
(iii) A sphere has a curved surface.
Draw an oblique sketch of a cuboid whose dimensions are
Q10.
How many cubes are used to form the following solid?
© Copyright 2011 - 12 Educomp Solutions Ltd.
.
Page 1 of 4
Q11.
Using isometric dot paper draw isometric sketch of a cube whose sides are
Q12.
each.
Two cubes of sides
Q13.
dimensions of the resulting cuboid?
Three cubes of sides
each are placed on top of each other. What will be the
Q14.
Q15.
Q16.
Q17.
Q18.
Q19.
Q20.
each are placed side by side. What would be the
resulting shape and its dimensions?
If you give horizontal cut to cube, what type of cross – sections will you get?
A cube is cut in half form the middle. What will be the numbers of faces, edges
and vertices of each of the new solids thus formed?
What will be the top, side and front views of the following figure?
Write two examples for each of the following:
(i) Cone (ii) sphere and (iii) cuboid
Mention two solid geometrical figures which do not have any vertices.
What is the shape of base of a (i) cone (ii) cylinder? Draw and explain.
Explain basic difference between cube and cuboid.
Answers
A1.
Faces: Flat surface of a solid shape are called its faces.
Edges: The line segments where two adjacent faces meet are the edges.
Vertices: Corners of a solid shape are its vertices.
A2.
and
© Copyright 2011 - 12 Educomp Solutions Ltd.
Page 2 of 4
A3.
No;
curved edges;
curved face and
A4.
A net is a sort of skeleton outline in
flat faces
which when folded results in a
shape.
A5.
A6.
A7.
A8.
A9.
(i) True (ii) False (iii) True
A10.
A11.
A12.
A13.
Cuboid;
© Copyright 2011 - 12 Educomp Solutions Ltd.
Page 3 of 4
A14.
Squares
A15.
A16.
A17.
(i) Ice- cream cone, Joker’s cap
(ii) Ball, Globe
(iii) Box, Brick
A18.
Cylinder, Sphere
A19.
A20.
Cube is a six sided three dimensional figure in which all the faces are square, a
cuboids is the same except that some of the faces are rectangles.
© Copyright 2011 - 12 Educomp Solutions Ltd.
Page 4 of 4