Ex.14.1 Q10 Symmetry - NCERT Maths Class 7

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Question

What other name can you give to the line of symmetry of –

(a) an isosceles triangle?

(b) a circle?

Text Solution

 

What is known?

Name of the shapes

What is unknown?

Another name can you give to the line of symmetry of an isosceles triangle & a circle.

Reasoning:

As it is given in the question, you have to find out the other name for lines of symmetry of an isosceles triangle and a circle. We know that an isosceles triangle has one line of symmetry and this is a line segment joining a vertex to the midpoint of the opposing side, bisecting it. So, we can call it median and a circle has infinitely many lines of symmetry passing through the centre, so we can call it diameter.

Steps:

  • Median
  • Diameter
  
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