Exploring Some Geometric Themes Class 8 MCQ
mediumExploring Some Geometric Themes Class 8 MCQ
Exploring Some Geometric Themes Class 8 MCQ
Question 1.
Which of the following is true about the solid shown below?
(a) It has equal number of faces and vertices.
(b) It has equal number of faces and edges.
(c) It has equal number of vertices and edges.
(d) It has equal number of faces, edges and vertices.
Answer:
(a) It has equal number of faces and vertices.
Question 2.
Which of the following nets can NOT make a cube?
Answer:
Question 3.
Figure shows the isometric sketch of an object.
Tanya and Kavita draw the sketches of the object as shown :
Who made the correct sketch of the object?
(a) Only Tanya
(b) Only Kavita
(c) Both Tanya and Kavita
(d) Neither Tanya nor Kavita
Answer:
(a) Only Tanya
Question 4.
A student placed a light bulb right above an object and noticed the shadow that was formed. Then, he placed the light bulb in front of the object and noticed the shadow again. If the shape of shadow formed both the times is the same, which of these could be the object?
(a) A cube
(b) A cuboid
(c) A cylinder
(d) A cone
Answer:
(a) A cube
Question 5.
The top view, side view and front view of a solid are shown below:
Which of these can NOT be the solid?
Answer:
Case Study
Question 1.
Net of a Triangular Prism
(a) Which of the following is the net of a triangular prism?
Fill in the blanks :
(b) Number of rectangular faces in a triangular prism is ____________ .
(c) Number of triangular faces in a triangular prism is ____________ .
(d) Number of vertices in a triangular prism is ______________ .
(e) Number of edges in a triangular prism is ______________ .
(f) Number of faces in a triangular prism is ____________.
Answer:
(a) (iii)
(b) 3
(c) 2
(d) 6
(e) 9
(f) 5.
Question 2.
3-D objects made up of small cubes
(а) Observe the diagram, and state the number of small cubes in the objects.
(i) 10
(ii) 9
(iii) 8
(iv) 7
(b) Sketch the front view of the object.
(c) Sketch the top view of the object.
(d) Sketch the left side view of the object.
(e) Sketch the right side view of the object.
Answer:
(a) - (ii)
