Q. 24.0( 11 Votes )

Based on the sides, classify the following triangles (figures not drawn to the scales).






Answer :

(i) Given: three sides of the triangle: 3cm, 4cm and 5cm.


As we know, if all the sides of a triangle are of different lengths then the triangle is a scalene triangle.


So, the given triangle is scalene triangle.


(ii) Given: three sides of triangle: 4cm, 7cm and 5cm.


As we know, if all the sides of a triangle are of different lengths then the triangle is a scalene triangle.


So, the given triangle is scalene triangle.


(iii) Given: three sides of triangle: 3.5cm, 4.5cm and 6cm.


As we know, if all the sides of a triangle are of different lengths then the triangle is a scalene triangle.


So, the given triangle is scalene triangle.


(iv) Given: three sides of triangle: 6.5cm, 6.5cm and 4cm.


As we know, if two of the sides of a triangle are of equal length then the triangle is an isosceles triangle.


So, the given triangle is isosceles triangle.


(v) Given: three sides of triangle: 3cm, 5.6cm and 4.3cm.


As we know, if all the sides of a triangle are of different lengths then the triangle is a scalene triangle.


So, the given triangle is scalene triangle.


(vi) Given: three sides of triangle: 2.5cm, 4.1cm and 3.2cm.


As we know, if all the sides of a triangle are of different lengths then the triangle is a scalene triangle.


So, the given triangle is scalene triangle.


(vii) Given: three sides of triangle: 5cm, 9cm and 6cm.


As we know, if all the sides of a triangle are of different lengths then the triangle is a scalene triangle.


So, the given triangle is scalene triangle.


(viii) Given: three sides of triangle: 3cm, 3cm and 3cm.


As we know, if all the sides of a triangle are of equal length then the triangle is an equilateral triangle.


So, the given triangle is equilateral triangle.


(ix) Given: three sides of triangle: 5cm, 5cm and 3.5cm.


As we know, if two of the sides of a triangle are of equal length then the triangle is an isosceles triangle.


So, the given triangle is isosceles triangle.


(x) Given: three sides of triangle: 6cm, 6cm and 8cm.


As we know, if two of the sides of a triangle are of equal length then the triangle is an isosceles triangle.


So, the given triangle is isosceles triangle.


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Karnataka Board - Mathematics Part I