Krishna
0

Step 1: Recall the sum of the interior angle of a triangle.

           NOTE: The sum of the interior angle measures of a triangle is 180°.


Step 2: Set the sum of the interior angle measures of the triangle equal to 180  

            EXAMPLE: Interior angles y + 31 + 105 = 180

                      

Step 3: Solve for unknown value

             EXAMPLE: y + 136 = 180

                                 y = 180 - 136

                                 y = 44