Ex.14.1 Q7 Symmetry - NCERT Maths Class 7

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Question

State the number of lines of symmetry for the following figures:

(a) An equilateral triangle

(b) An isosceles triangle

(c) A scalene triangle

(d) A square

(e) A rectangle

(f) A rhombus

(g) A parallelogram

(h) A quadrilateral

(i) A regular hexagon

(j) A circle

Text Solution

What is known?

Different figures.

What is unknown?

The number of lines of symmetry for the given figures.

Reasoning:

This question is very simple. You have to draw different lines and check which line will divide it into exactly same parts, that line will be called the line of symmetry.

Steps:

(a) It has three lines of symmetry.

(b) It has one line of symmetry.

(c) It has no line of symmetry.

(d) It has four lines of symmetry.

(e) It has two lines of symmetry.

(f) It has two lines of symmetry.

(g) It has no line of symmetry.

(h) It has no line of symmetry.

(i) It has six lines of symmetry.

(j) It has infinitely many lines of symmetry

  
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