Answer: 1 : 3
Explanation:
No. Of Lines of Symmetry for an Equilateral Triangle is 3.
No. Of Lines of Symmetry for an Isosceles Triangle is 1.
Therefore,
= 1/3
=> 1 : 3
The Ratio of the Number of Lines of Symmetry for an Isosceles Triangle to that of an Equilateral Triangle is 1 : 3