What is the measure of y? (hint- find the sum of the interior angles first)if the angles are 112° and 88° and 135° what is the measure of y? a.115b.540c.205

Option A 115.

Step-by-step explanation:

In any quadrilateral having number of sides = n

Sum of all interior angles is = ( n-2 ) × 180°

Now in this question number of sides are n = 5

so sum of interior angles = (5 - 2) × 180°

                                          = 3 × 180°

                                          = 540°

Now sum of all interior angles = 90 + 135 + y + 88 + 112

                                                  = 425 + y

By the definition of interior angles.

425 + y = 540

          y = 540 - 425

              = 115°

Therefore, option A is the answer.

step-by-step explanation:

b and c