Subtract the (sum of the other three angles) from 360.
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There is no specific limitation on any one angle of an inscribed quadrilateral.
A rectangle is a quadrilateral (four sided shape) with four right angles. Therefore, the measure of every angle is 90 deg.
If three central angles measures 65, 87, and 112, find the measure of the fourth central angle.
The sum of the angles of a triangle equal 180 degrees. The sum of the angles of a quadrilateral equal 360 degrees. To find the measure of an angle for a triangle, you must first be given the other two angle numbers, unless it is an equilateral triangle, in which all angles would equal 60 degrees. To find the measure of a quadrilateral, you must first be given the other three angle numbers, unless it is a square, in which all angles would equal 90 degrees.
A quadrilateral has four angles. There is information on only three so there are infinitely many possible answers.