🪞 Chapter 5 – Does it Look the Same?
Subject: Mathematics
Main Concepts: Symmetry, Mirror Image, Rotation, Half Turn, One-Fourth Turn
📘 Introduction
In this chapter, we learn how to find whether a shape or picture looks exactly the same after folding, turning, or placing a mirror. This idea is called symmetry.
🎨 Making Patterns from a Drop of Colour
When a drop of colour is placed on folded paper and opened, it forms a beautiful pattern.
🪞 Mirror Halves (Line of Symmetry)
If a shape can be divided into two identical halves such that one half completely covers the other when folded, the shape has mirror halves.
✔ Line of Symmetry
The line along which a shape is folded to get two identical halves is called the line of symmetry.
🧩 Symmetry in Shapes and Colours
Sometimes a shape may be symmetrical, but the colour pattern can make it look asymmetrical.
🐶 Mirror Games
When a mirror is placed on a dotted line:
- The part behind the mirror is hidden
- The mirror shows the reflected image
Draw a shape and place a mirror on different lines. Observe which line gives a complete shape.
🔄 Rotation (Turning Shapes)
Rotation means turning a shape around a fixed point.
✔ Half Turn (1/2 Turn)
A half turn means rotating a shape by 180°.
🔤 Letters & Numbers after Half Turn
| Looks Same | Does Not Look Same |
|---|---|
| H, I, N, O, S, X, Z | A, B, C, D, E |
| 0, 1, 8 | 2, 3, 4, 5, 6, 7, 9 |
🕰️ One-Fourth Turn (1/4 Turn)
A one-fourth turn means rotating a shape by 90°.
🌪️ Windmill Activity
A windmill shows rotational symmetry.
✔ Looks same after 1/2 turn?
Discuss your observations.
➗ One-Sixth Turn (1/6 Turn)
If a shape is divided into 6 equal parts, each turn of 60° is called a one-sixth turn.
✍️ Practice Questions
2) Name two letters that look the same after half turn.
3) Does a square look the same after a 1/4 turn?
4) Why do some shapes not look the same after turning?
✅ Quick Revision
✔ Mirror line shows reflection
✔ Half turn = 180°
✔ One-fourth turn = 90°
✔ Rotation can change or keep the shape same
🎉 Chapter Complete
After studying this chapter, students can confidently identify symmetry, mirror images, and rotational patterns in shapes, letters, numbers, and real life objects.
📝 Complete Worksheet – Does it Look the Same?
Chapter: Does it Look the Same?
Main Topics: Symmetry, Mirror Image, Rotation, Turns 🎯
Section A – Multiple Choice Questions (MCQs)
Q1. When a shape is folded and both halves match exactly, it is called:
Q2. The line along which a shape is folded to get two identical halves is called:
Q3. A half turn means rotating a shape by:
Q4. Which letter looks the same after a half turn?
✔ Q2 → (b) Line of symmetry
✔ Q3 → (c) 180°
✔ Q4 → (b) N
Section B – Fill in the Blanks
2) A shape that does not have mirror halves is __________.
3) One-fourth turn is equal to __________ degrees.
4) A shape that looks the same after turning has __________ symmetry.
✔ asymmetrical
✔ 90
✔ rotational
Section C – Very Short Answer Questions
1) What is symmetry?
2) What is a mirror image?
3) Write one number that looks the same after half turn.
✔ The reflected image seen in a mirror.
✔ 0 / 8 / 1
Section D – Short Answer Questions
Q1. What is a line of symmetry?
Q2. Why do some shapes not look the same after folding?
Q3. What is a one-fourth turn?
✔ Because their halves are not identical.
✔ Turning a shape by 90 degrees.
Section E – Long Answer Questions
Q1. Explain mirror symmetry with an example.
Q2. How can you check whether a shape looks the same after a half turn?
✔ Trace the shape, rotate it by 180°, and see if it fits exactly.
Section F – HOTS / Thinking Questions ⭐
Q1. Can a shape be symmetrical but not look the same because of colours? Explain.
Q2. Why does a windmill look the same after a turn?
✔ Because it has rotational symmetry.
🎯 Worksheet Complete
✔ Revise symmetry types
✔ Try mirror & rotation activities at home
✔ You are now **exam-ready** ✅