Symmetry is when one half of something is exactly like the other half, like a mirror image! It's beauty in balance.
Mirror Test:
Fold a paper butterfly in half
If both halves match exactly
It has symmetry!
The fold line is called "line of symmetry"
Butterfly:
Left and right wings are mirror images
Has one vertical line of symmetry
Beautiful and balanced!
Human Face:
Our faces are mostly symmetrical
Left eye matches right eye
Left ear matches right ear
Leaves:
Many leaves have symmetry
Midrib divides leaf into equal halves
Nature loves symmetry!
Rangoli:
Traditional rangoli designs
Often perfectly symmetrical
Beautiful patterns for festivals
Taj Mahal:
World's most symmetrical building
Left and right sides are mirror images
Perfect balance in architecture
Mandala Art:
Circular symmetrical designs
Used in meditation and art
Radial symmetry from center
Line Symmetry:
Can fold along a line
Both halves match exactly
Example: Letter A, butterfly
Rotational Symmetry:
Looks same when rotated
Example: Wheel, starfish, fan
Windmill blades look same when turning
In this chapter, we will learn:
Symmetry helps us:
For Class 7 Students (NCERT & JKBOSE)