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Question not well presented and diagram is missing
Quadrilateral WILD is inscribed in circle O.
WI is a diameter of circle O.
What is the measure of angle D?
See attached for diagram
Answer:
Step-by-step explanation:
Summation of opposite angles of a quadrilateral inscribed in a circle is 180°, given that the vertices are on the circle.
Given
<WIL = 45°
<ILD = 109°
In the attached;
<WIL + <WDL = 180° (Opposite angle of quadrilateral)
Substitute 45° for <WIL in the above expression
45° + <WDL = 180° ---- Collect like terms
<WDL = 180° - 45°
<WDL = 135°
Hence, the measure of angle D is 135° (See attached)

The measure of angle D is 135 degrees.
How many angles does a circle have?
It is irrelevant to ask why the circle has 360 degrees, why it is divided into 360 equal parts or why 1 degree is a unit of measure of angles that corresponds to that of a circle.
Organizing the information given in the statement we have that:
- <WIL = 45°
- <ILD = 109°
So the calculation will be given as:
[tex]< WIL + < WDL = 180 \\45 + < WDL = 180\\ < WDL = 180 - 45\\ < WDL = 135[/tex]
See more about angle of circle at brainly.com/question/11833983