Shapes Around Us — Important Questions
CBSE · Class 4 · Mathematics
45 important questions from Shapes Around Us for CBSE Class 4 Mathematics, with answers. Part of the CBSE Class 4 Mathematics syllabus.
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Important Questions from Shapes Around Us
Which of these are properties of a triangular pyramid?
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Has 4 faces, Has 4 corners, Has 6 edges, All faces are triangles
A triangular pyramid has 4 triangular faces, 4 corners (vertices), and 6 edges. It does not have a square base - its base is also triangular.
Which shapes have curved faces?
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Cylinder, Cone, Sphere
Shapes with curved faces include a cylinder, cone, and sphere. A cylinder has one curved face along with two flat faces, a cone has one flat face and one curved face, and a sphere has only one curved face. A cube and a cuboid have only flat faces, so they do not belong here.
The diameter of a circle is twice the length of its radius.
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True
This is true. The diameter goes all the way across the circle through the center, while the radius goes from center to edge. So diameter = 2 × radius.
Which angle is smaller than a right angle?
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Acute angle
An acute angle is less than 90 degrees (smaller than a right angle). Obtuse angles are greater than 90 degrees (bigger than a right angle).
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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