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

Question 11 Mark
Name any four objects from your environment, which have the form of:
A cube
Answer
A disc, a chalk box, a cubical cabin, and a tissue box.
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Question 31 Mark
In the following , state if the statement is true (T) or false (F):
Number of faces in a cuboid and the number of faces in a cube are equal.
Answer
True.
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Question 41 Mark
Give two new examples of the following three-dimensional shape:
Cylinder
Answer
Drink cans and delivering pipes for a water and gas.
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Question 51 Mark
Fill in the blanks to make the following statement true:
Two adjacent faces of a cuboid meet in a line segment called its _____.
Answer
Two adjacent faces of a cuboid meet in a line segment called its edge.
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Question 61 Mark
Fill in the blanks to make the following statement true:
The three concurrent edges of a cuboid meet at a point called the _____ of the cuboid.
Answer
The three concurrent edges of a cuboid meet at a point called the vertex or corner of the cuboid.
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Question 71 Mark
Fill in the blanks to make the following statement true:
A cuboid all of whose edges are equal is called a _____.
Answer
A cuboid all of whose edges are equal is called a cube.
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Question 81 Mark
Fill in the blanks to make the following statement true:
A cuboid has _____ edges.
Answer
A cuboid has twelve edges.
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Question 91 Mark
In fig., name the:
Three edges which meet in the vertex G.
Answer
Three edges which meet in the vertex G are GF, GH and CG.
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Question 101 Mark
Fill in the blanks to make the following statement true:
A _____ is a cuboid in which all the six faces are squares.
Answer
A cube is a cuboid in which all the six faces are squares.
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Question 121 Mark
In fig. name the four diagonals of the cuboid.
Answer
The four diagonals of the cuboid CE, BH, AG and DF.
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Question 141 Mark
In fig., name the:
faces adjacent to BFGC
Answer
The faces adjacent to BFGC are BCDA, DCGH, ABFE, and EFGH.
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Question 161 Mark
Give two new examples of the following three-dimensional shape:
Pyramid
Answer
A paper-weight and a tower like the Eiffel tower.
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Question 171 Mark
Fill in the blanks to make the following statement true:
The number of lateral faces of a cuboid is _____.
Answer
The number of lateral faces of a cuboid is four.
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Question 201 Mark
Give two new examples of the following three-dimensional shape:
Sphere
Answer
A tennis ball and a model of a globe.
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Question 211 Mark
Fill in the blanks to make the following statement true:
_____ edges of a cube (or cuboid) meet at each of its vertices.
Answer
Three edges of a cube (or cuboid) meet at each of its vertices.
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Question 231 Mark
Fill in the blanks to make the following statement true:
A cuboid has _____ faces.
Answer
A cuboid has six faces.
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Question 241 Mark
Name any four objects from your environment, which have the form of:
A cuboid
Answer
A lunch box, a compass box, a book, and a duster.
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Question 251 Mark
In the following , state if the statement is true (T) or false (F):
A cube has twelve vertices.
Answer
False.
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Question 261 Mark
Fill in the blanks to make the following statement true:
A cuboid has _____ vertices.
Answer
A cuboid has eight vertices.
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Question 271 Mark
Fill in the blanks to make the following statement true:
Each edge of a cuboid can be obtained as a line segment called in which two _____ meet.
Answer
Each edge of a cuboid can be obtained as a line segment called in which two adjacent faces meet.
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