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Maths 1 Marks Question

Three-Dimensional Figures · Jharkhand Board (JAC) STD 8 (Jharkhand - English Medium). 4 questions.

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4 questions · self-marked practice — reveal the answer and mark yourself.

Question 11 Mark
Fill in the blanks:
A cuboid is also known as a rectangular _______.
Answer
A cuboid is also known as a rectangular cube.
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Question 21 Mark
Fill in the blanks:
A cube has ______ vertices, ______ edges and ______ faces.
Answer
A cube has 8 vertices, 12 edges and 6 faces.
Explanation:
Vertices: $I, J, K, L, M, N, O$ and $P.$
Edges: $IJ, JN, NM, MI, PL, LK, KO, OP, PM, LI, KJ,$ and $O.$
Faces: $MNJI, POKL, PLIM, OKJN, PONM$ and $LKJI.$​​​​​​​
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Question 31 Mark
Fill in the blanks: The point at which three faces of a figure meet is known as its ______.
Answer
The point at which three faces of a figure meet is known as its vertex.
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Question 41 Mark
Fill in the blanks: A triangular pyramid is called a ______.
Answer
A triangular pyramid is called a tetrahedraon.
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