NCERT Solutions for Class 4 Mathematics Maths Mela (English) Chapter 1

NCERT solutions for Class 4 Mathematics Chapter Shapes Around Us – complete answers & explanations

This blog provides complete NCERT solutions for Class 4 Mathematics Chapter Shapes Around Us based strictly on the given worksheet. This chapter helps students explore different shapes found in their surroundings, including 2D and 3D shapes, angles, and basic geometry concepts. It is important because it builds observation skills and strengthens foundational understanding of shapes in real life. All answers shared here follow the worksheet exactly, helping students learn correctly and confidently.

What this NCERT chapter covers?

1. Understanding 2D and 3D shapes through real-life examples  
2. Identifying faces, edges, and corners of solid shapes  
3. Learning about prisms, pyramids, and nets of shapes  
4. Exploring angles such as right, acute, and obtuse  
5. Observing and classifying shapes based on properties  
6. Learning about circles, radius, and diameter  

How to use these NCERT solutions?

1. First attempt all questions in the worksheet independently  
2. Compare your answers with the given solutions after completing the worksheet  
3. Identify mistakes and understand the correct approach  
4. Parents and teachers can guide students during activity-based tasks  
5. Follow the sequence of solutions as given to match the worksheet order  

Important tips & tricks for students

1. Carefully observe shapes in your surroundings before answering  
2. Do not skip activity-based questions; attempt them practically  
3. Remember definitions of faces, edges, and corners clearly  
4. Practice identifying different types of angles correctly  
5. Read each question carefully before answering  
6. Revise concepts using models and drawings for better understanding  

NCERT solutions – complete answer key

What parts of the building have you shown in your model (for example, roof, pillars, base, etc.)?  
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Why did you select these parts?  
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What shapes will model these parts well?  
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How is your model similar to the picture of the real building?  
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How is it different from the real building?  
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Discussion: What would happen if you removed one piece of your model?  
Would the model still look like the original building?  
In what ways could you make the model even better?  
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Do you think it looks like the Qutub Minar?  
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What shape would you use if you made a model of the Qutub Minar? Why?  
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How many such shapes will you use?  
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Encourage learners to observe a street carefully and make a model showing the main buildings on the street.  
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Use the nets given at the end of the book to make the models shown below.  
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Is a cube also a prism?  
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What is the difference between a prism and a pyramid? Discuss.  
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Make a sphere-like shape with paper strips.  
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What shape of face is common to all the prisms?  
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What other shapes do these prisms have?  
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How many such faces each?  
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What shape of face is common to all the pyramids?  
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All the triangular faces meet at ______ point.  
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Identify any other shape in each of the pyramids  
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Now try to make the above shapes using straws and plasticine/thread and fill in the table.  
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Sort 3D shapes by the number of flat faces. Write their names here.  
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Now sort 3D shapes by the number of straight edges. Write their names here.  
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Identify any relationship that you may find between the number of faces (F), edges (E), and corners (V). Calculate F+V–E in each case. What do you notice?  
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Can you construct a 3D shape with 3 flat faces?  
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What is the face opposite to the face numbered 2?  
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What is the face opposite to the face numbered 3?  
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What is the face opposite to the face numbered 4?  
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Which faces have common edges with the face numbered 1?  
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Which face has no common edge with the face numbered 1?  
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What colour is the face that is opposite to the red face?  
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What colour is the face that is opposite to the yellow face?  
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Follow these instructions for the shapes along the border.  
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Write the names of 3D shapes in the correct places.  
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In which circle did you write triangular prism and rectangular pyramid?  
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Can you sort shapes into the categories “Shapes with curved faces” and “Shapes with flat faces”?  
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How many cubes are there in each of these cube towers?  
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Can you complete the following cubes?  
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Match the pictures to the descriptions and name the shapes.  
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Each one is different. How? Discuss.  
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Match the following nets to the appropriate solids given below.  
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Which of these nets can be folded to make a solid of the kind given below?  
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Which solid has the above pieces in its net?  
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Mark the angles in the following pictures.  
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Where do you see angles in the classroom? Give a few examples.  
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Check for right angles in a book, window, and any other object.  
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Write the names of objects where you find right angles.  
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Identify the angles that you think are right angles and circle them in the dot grid.  
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Draw some right angles on the dot grid.  
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Name some objects from your classroom which have an acute angle.  
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Name some objects from your classroom which have an obtuse angle.  
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Identify all angles in the following letters.  
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Draw some acute angles.  
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Draw some obtuse angles.  
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Mark the acute, right, and obtuse angles in the figures.  
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Does the shape of the triangle change if we gently push one of its sides?  
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What kinds of angles does a triangle have?  
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What kinds of angles do you see in the rectangle?  
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Does the shape of the rectangle change if we gently push one of its sides?  
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What has happened to the angles of the new shape?  
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Are they still right angles? What types of angles have been formed?  
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Can you make a circle using straws?  
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The lengths of the straws in this picture are ______.  
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What will happen if we take straws of unequal lengths?  
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Connect the dots freehand. What do you get?  
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Are these right angles?  
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Does the shape of the pentagon change if we gently push one of its sides?  
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The length of all the creases are ______.  
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Discuss where the centre is.  
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Measure the length of the creases.  
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Discuss if there is any relationship between the radius and the diameter of a circle.  
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The length of the diameter is ______ of the length of radius.  
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Identify the hidden shapes and write their names.  
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Draw 2 lines to divide the triangle into 1 square and 2 triangles.  
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Draw 2 lines to divide the square into 3 triangles.  
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Draw lines to show the cuts needed on the shapes.  
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Sort the 2D-shape cards into groups.  
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How many triangles are in the web?  
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Can she begin at point A and reach back without walking on any wall more than once?  
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Use 5 matchsticks to make 2 triangles.  
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Move two matchsticks to form 4 triangles.  
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Remove 4 matchsticks to leave only 3 triangles.  
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Model challenge.  
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What relation do you notice between the number of sides and the number of angles?  
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Classify these shapes based on the number of angles.  
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Draw a 2D shape that has less than 5 angles.  
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Draw a 2D shape with more than 5 angles.  
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Mark the right angles and write the number of right angles.  
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Identify the shape based on given angle conditions.  
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Why NCERT solutions help students?

NCERT solutions help students understand concepts clearly and prepare effectively for exams. They ensure answers follow the correct format and improve accuracy. These solutions build confidence and support independent learning.

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