Question

Three angles of triangles are x + 5 degree and x + 10 degree and x + 15 degree find x

Answer 1

Sum of internal angles of a triangle = 180

therefore, x+5+x+10+x+15= 180

3x+30=180
3x=150
x=50

Answer 2

Given :

Three angles of triangles are x + 5 degree and x + 10 degree and x + 15

To Find:

find x

Solution:

Angle sum property of triangle : The sum of all angles of triangle is 180°

Angle 1 = x+5

Angle 2 = x+10

Angle 3 =x+15

So, x+5+x+10+x+15=180

3x+30=180

3x=180-30

3x=150

x=50

Hence The value of x is 30