Question

the angles of a tringle are 5 (y-1)degree , 3(2y -5) degree and 9y degree, fing y and assign name of the tringle

Answer 1

hii mate
given angles = 5(y-1) ,3(2y-5) , 9y
sum of angles in a triangle is 180
5(y-1)+3(2y-5)+9y=180
5y-5+6y-6+9y=180
20y-20=180
20y=180+20
20y=200
y=200/20
y=10

angles =5(10-1) ,3(2×10-5) ,9×10
=5×9 , 3 ×15 , 90
=45 , 45 ,90
as one angle is 90 degrees the triangle is a Right angled triangle
hope it helps u plz mark it as a brainlist answer......

Answer 2

5(y-1) +3(2y-5) +9y=180 degree(Sum of the angles of the triangle=180)
5y-5+6y-15+9y=180
20y-20=180
20y=180+20
20y=200
$y = \frac{200}{20} = 10$
y=10

5(10-1)+3(20-5)+9*10
45+45+90
Therefore A Right angled triangle.