Symmetry – Class 6 Mathematics Important Notes (Updated
Syllabus)
Introduction
Symmetry means that an object can be divided into two equal and
identical halves. If both halves look exactly the same when folded, the
object is said to be symmetrical.
What Is Symmetry
A figure is symmetrical if one half is the mirror image of the other half.
Line of Symmetry
A line of symmetry is a line that divides a figure into two identical parts.
Examples:
Square → 4 lines of symmetry
Rectangle → 2 lines of symmetry
Circle → Infinite lines of symmetry
Triangle → 1 or more lines (depends on type)
Symmetry in Shapes
Square: 4 lines of symmetry
Rectangle: 2 lines of symmetry
Equilateral Triangle: 3 lines of symmetry
Isosceles Triangle: 1 line of symmetry
Scalene Triangle: No line of symmetry
Symmetry in Alphabets
English capital letters with symmetry:
Vertical line: A, M, T, U, V, W, Y
Horizontal line: B, C, D, E
