Question

If the angles of a triangle are in the ratio 2:3:5, then what of triangle will it be

Answer 1

sum of the three angles in any triangle= 180degrees
ratio of angles=2:3:5
let first angle=2x
second angle=3x
third angle= 5x

2x+3x+5x=180
10x=180

x=180/10

x=18

there fore first angle =2x=2×18=36

second angle=3x=3×18=54
third angle =5x=5×18=90

Answer 2

let the angles be 2x, 3x and 5x
since, the sum of angles of a triangle is 180°

∴2x + 3x + 5x = 180°
10x = 180°
x = 180/10
= 18

hence, the angles are,
2x = 2 × 18 = 36°
3x = 3 ×18 =54°
5x = 5 × 18 = 90°