The measure of the arc CD will be 130°.
What is a circle?
It is the center of an equidistant point drawn from the center. The radius of a circle is the distance between the center and the circumference.
A circle's arc is referred to as a portion or section of its perimeter. Chords of a circle is a linear function that might be created by joining the arc's open end. A semicircular arc is one whose length is barely half that of a ring.
The arcs of the circle are given below.
arc DE = 145°
arc EC = 85°
Then the measure of the arc CD will be
We know that the sum of the arc will be 360°. Then we have
CD + DE + EC = 360°
CD + 145° + 85° = 360°
CD + 230° = 360°
CD = 360° – 230°
CD = 130°
Then the measure of the arc CD will be 130°.
More about the circle link is given below.
https://brainly.com/question/11833983
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