NCERT class 7 mathematics chapter 12 – “Symmetry” is an important geometrical concept, commonly exhibited in nature and is used almost in every field of activity. Artists, professionals, designers of clothing or jewellery, car manufacturers, architects and many others make use of the idea of symmetry. For the CBSE exams, practice multiple-choice questions (MCQs) to prepare for the objective questions. We have provided Class 7 MCQ Questions on “Symmetry” paired with comprehensive explanations. CBSE is emphasizing the role of MCQs as they assist in understanding the concepts completely.
As compared to subjective questions, MCQs are very different so practicing and understanding how to get appropriate answers in MCQs is very essential. To revise the main concepts, students should practice all the MCQs with the answers given. This will also help them familiarize themselves with the kinds of questions that might appear in the board exams.
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Topics covered in “Symmetry”
- Lines of Symmetry for Regular Polygons
- Rotational Symmetry
- Line Symmetry and Rotational Symmetry
CBSE Class 7 Mathematics Symmetry MCQs – PDF Download
Answers –
Summary for NCERT class 7 mathematics chapter 12 – “Symmetry”
- A figure has line symmetry, if there is a line about which the figure may be folded so that the two parts of the figure will coincide.
- Regular polygons have equal sides and equal angles. They have multiple (i.e., more than one) lines of symmetry.
- Mirror reflection leads to symmetry, under which the left-right orientation have to be taken care of.
- If, after a rotation, an object looks exactly the same, we say that it has a rotational symmetry.
- In a complete turn (of 360° ), the number of times an object looks exactly the same is called the order of rotational symmetry.
- The order of symmetry of a square, for example, is 4 while, for an equilateral triangle, it is 3.
- Some shapes have only one line of symmetry, like the letter E; some have only rotational symmetry, like the letter S; and some have both symmetries like the letter H.
- The study of symmetry is important because of its frequent use in day-to-day life and more because of the beautiful designs it can provide us.
Best Reference Books for Class 7 Mathematics
- NCERT Textbook + Exemplar Problems Solutions Mathematics
- NCERT at your Fingertips Mathematics
- Foundation Course Mathematics
- Practice-cum-Workbook Mathematics
- Integrated Learning Mathematics
