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Question
What is the number of lines of symmetry in an equilateral triangle?
What is the number of lines of symmetry in an equilateral triangle?
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Solution
The correct option is A 3
A figure is said to have a line of symmetry or linear symmetry if there exists a line which divides the figure into two identical halves such that they coincide when folded along this line.
Equilateral triangle is a regular polygon as its all the three sides and angles are equal and for a regular polygon number of lines of symmetry is equal to the number of sides of the polygon.
Hence an equilateral triangle have 3 lines of symmetry as shown below.
3
A figure is said to have a line of symmetry or linear symmetry if there exists a line which divides the figure into two identical halves such that they coincide when folded along this line.
Equilateral triangle is a regular polygon as its all the three sides and angles are equal and for a regular polygon number of lines of symmetry is equal to the number of sides of the polygon.
Hence an equilateral triangle have 3 lines of symmetry as shown below.
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