Question

15. In the given figures, find the value of y.​

Answer 1

Answer:

30,60,20

Step-by-step explanation:

We know that the sum of all the angles of a triangle is 180 degrees...

1. 2y+y+90 = 180

              3y= 180-90=90

                y= 90/3

               y=30

2. y+y+y = 180

         3y = 180

           y = 180/3

          y= 60

3. y+y+7y=180

          9y=180

            y=180/9

           y=20

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