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All questions of 3-D Solids for Grade 1 Exam

Which shape has 3 sides and 3 corners?
  • a)
    Square
  • b)
    Circle
  • c)
    Triangle
  • d)
    None of the above
Correct answer is option 'C'. Can you explain this answer?

Pranav Singh answered

A triangle is a polygon with three edges and three vertices. It is one of the basic shapes in geometry.

Choose the correct option
  • a)
    Circle
  • b)
    Rectangle
  • c)
    Triangle
  • d)
    None of the above
Correct answer is option 'A'. Can you explain this answer?

Pranav Singh answered

A circle is a round shaped figure that has no corners or edges. 
In geometry, a circle can be defined as a closed, two - dimensional curved shape.

So, This figure is circle.

Circle has __________ corners
  • a)
    5
  • b)
    1
  • c)
    2
  • d)
    0
Correct answer is option 'D'. Can you explain this answer?

Pranav Singh answered
A corner is where 2 sides meet. E.g. a triangle has 3 straight sides and 3 corners, whereas a circle has 1 curved side but no corners.

Ludo is an example of
  • a)
    Square.
  • b)
    Cone
  • c)
    Triangle​
  • d)
    None of the above
Correct answer is option 'A'. Can you explain this answer?

Naina Sharma answered
A plane figure with four equal straight sides and four right angles.

So, the Ludo is an example of Square.

How many triangles are there in the figure given?   
  • a)
    8                 
  • b)
    10
  • c)
    7
  • d)
    6
Correct answer is option 'B'. Can you explain this answer?

Orion Classes answered
The triangles in the given figure are 1,  2, 3, 4, 5, 6 = 6 triangles. 3 + 4 = 1 triangle 1 + 2 = 1 triangle 3 + 4 + 5 = 1 triangle + 4 + 5 + 6 = 1 triangle
∴ Number of triangles = 6 + 1 + 1 + 1 + 1 = 10 triangles.

Rectangle has ___________ sides and ____________ corners.
  • a)
    4, 4
  • b)
    8, 8
  • c)
    0, 0
  • d)
    5, 5
Correct answer is option 'A'. Can you explain this answer?

Rahul Desai answered

A rectangle is a 2D shape in geometry, having 4 sides and 4 corners. Its two sides meet at right angles. Thus, a rectangle has 4 angles, each measuring 90 ̊.

The object that can roll
  • a)
  • b)
  • c)
  • d)
    None of the above
Correct answer is option 'B'. Can you explain this answer?

Neha Verma answered
The object which has a curved surface that is all circular objects can roll. Examples: Ball, lemon, orange, apple, football, etc.

Identify the shape
  • a)
    Cone
  • b)
    Cube
  • c)
    Cylinder​
  • d)
    circle
Correct answer is option 'A'. Can you explain this answer?

Pranav Singh answered
A cone is a distinctive three-dimensional geometric figure that has a flat surface and a curved surface, pointed towards the top. The pointed end of the cone is called the apex, whereas the flat surface is called the base. This is what a cone looks like:

Identify the shape
  • a)
    Sphere
  • b)
    Cube
  • c)
    ​Cylinder
  • d)
    None of the above
Correct answer is option 'C'. Can you explain this answer?

Rahul Desai answered
The cylinder can be defined as a solid geometrical figure with straight parallel sides and a circular or oval cross-section. Examples are: Pipes. Cold drink cans.

Complete the pattern
  • a)
  • b)
  • c)
  • d)
    None of these
Correct answer is option 'C'. Can you explain this answer?

Rahul Desai answered
The definition of a pattern is someone or something used as a model to make a copy, a design, or an expected action. An example of a pattern is the paper sections a seamstress uses to make a dress; a dress pattern. An example of a pattern is polka dots. An example of a pattern is rush hour traffic; a traffic pattern.

So, Option c is the correct answer.

Identify the shape
  • a)
    Circle​
  • b)
    Cone
  • c)
    Rectangle
  • d)
    None of the above
Correct answer is option 'C'. Can you explain this answer?

Neha Verma answered
Rectangle: A rectangle is a 2D shape in , having 4 sides and 4 corners. Its two  meet at . Thus, a rectangle has 4 , each measuring 90 ̊. The opposite sides of a rectangle have the same lengths and are parallel.  Two sides are said to be parallel, when the distance between them remains the same at all points.

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