Question

Angles of a triangle are in the ratio 4:6:5 the triangle is :
(A) an acute angled triangle
(B) an obtuse angled triangle
(C) right angled triangle
(D) isosceles triangle

Answer 1

Answer:

correct option is (A) an acute angled triangle

Step-by-step explanation:

let the ratio be x

4x,6x,5x equation 1

sum of angles = 180°

4x+6x+5x=180°

15x =180°

x=180/15

x=12

put value of x in equation 1

4x=4×12=48°

6x=6×12=72°

5x=5×12=60°

so all angles are acute angles