A quadrilateral is inscribed in a circle. Two consecutive angles measure 88° and 108°. The angle opposite the 88° angle is labeled y° . Find the value of y.(1 point)

y=
°

1 answer

In a cyclic quadrilateral (a quadrilateral inscribed in a circle), the opposite angles are supplementary, meaning that they add up to \(180^\circ\).

Given the two consecutive angles:

  • One angle measures \(88^\circ\)
  • The angle next to it (consecutive angle) measures \(108^\circ\)

Let’s label the angles of the quadrilateral as follows:

  • Angle 1: \(88^\circ\)
  • Angle 2: \(108^\circ\)
  • Angle 3: \(y^\circ\) (opposite angle to \(88^\circ\))
  • Angle 4: (opposite angle to \(108^\circ\)).

Using the property of the cyclic quadrilateral, we know that:

\[ \text{Angle 1} + \text{Angle 3} = 180^\circ \]

Substituting the known value:

\[ 88^\circ + y^\circ = 180^\circ \]

Now, solving for \(y\):

\[ y^\circ = 180^\circ - 88^\circ \] \[ y = 92^\circ \]

Therefore, the value of \(y\) is:

\[ \boxed{92} \]