1.

.The number of axes of symmetry in a symmetrical figure is​

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Triangle can have 3, or 1 or no lines of symmetry

  • Equilateral Triangle(all sides equal,all ANGLES equal)
  • Isosceles Triangle(two sides equal,two angles equal)
  • SCALENE Triangle(no sides equal, no angles equal)

Different types of Quadrilaterals (a 4-sided plane shape):

  • SQUARE(all sides equal,all angles 90°)
  • Rectangle(opposite sides equal,all angles 90°)
  • Irregular Quadrilateral has no lines of symmetry

A regular POLYGON has all sides equal, and all angles equal:

  • An Equilateral Triangle (3 sides) has 3 Lines of Symmetry
  • Square (4 sides) has 4 Lines of Symmetry
  • Regular Hexagon (6 sides) has 6 Lines of Symmetry
  • Regular Heptagon (7 sides) has 7 Lines of Symmetry
  • Regular Octagon (8 sides) has 8 Lines of Symmetry

A regular polygon of "n" sides has "n" Lines of Symmetry

  • A line (drawn at any angle) that GOES through its centre is a Line of Symmetry. So a Circle has infinite Lines of Symmetry.


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