Question

Which of the following is not true?
a) Given that the sides of a scalene triangle are integers, then one of the sides can be 1
b) The 3 medians of a triangle divide it into 6 similar triangles
c) An isosceles triangle can never be obtuse

• A. Only A
• B. only A and C
• C. Only C
• D. A, B and C

Answer 1

The correct option is B only A and C

option (b)

a is false as if one side is 1, another side is a, then the third side < a+1. this is not possible as it needs to be an integer value and since it’s a scalene triangle, the third side cannot be 1+a

b is true

c is false as there is a possibility of 120${}^{\circ }$, 30${}^{\circ }$ , 30${}^{\circ }$