Page 277 - Start Up Mathematics_7

Review Exercises

Multiple ChoiCe Questions

1. An isometric sheet is made up of dots forming:
(a) right-angled triangles (b) equilateral triangles (c) squares (d) rectangles
2. The number of edges in a polyhedron having 8 faces and 12 vertices is:
(a) 14 (b) 16 (c) 18 (d) 20

3. The top view of the solid shown in the figure given alongside is:

(a) (b) (c) (d)

4. The number of edges in the given solid is:

(a) 12 (b) 14

(c) 16 (d) 18

Questions numbered 5 to 8 are based on the given figure in which unit cubes are glued together
to form a structure as shown. Answer them.
5. The number of unit cubes present in
the combination is:

(a) 20 (b) 21

(c) 19 (d) 13
Side
Front
6. The side view of the given structure is:

(a) (b) (c) (d)

7. The number of unit cubes to be added to make a cuboid of dimension 4 × 4 × 2 is:
(a) 10 (b) 11 (c) 12 (d) 13

8. If the structure is painted on the surface everywhere, the number of unit cubes having no face
painted is:
(a) 0 (b) 1 (c) 3 (d) 11

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