Question

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

Answer 1

measures of the angles of triangle are : 2 x , 3x , 5x   
total sum =  10 x  = 180°

so x = 18°

so measures of the angles are 36°, 54°  and 90°

so it is a right angle triangle.

Answer 2

let the triangle angles be= 2x, 3x, 5x
measure of triangle= 180°
then => 2x + 3x + 5x = 180
=>10x = 180
=> x =180/10
x = 18°
so, side of triangles measure:
2x= 2*18=36°
3x= 3*18=54°
5x= 5*18=90°
so it is right angle.