Consider the Circle E. Segment CD is the perpendicular bisector of AB.
What is the measure of the arc intercepted by
The measures of the arc = 2 π *r* ∠ / 360º
Segment CD is the perpendicular bisector of AB, the angles = 90º
The measures of the arc = 2 π * r* 90º / 360º
The measures of the arc = 2 π * r* (1 / 4)
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The measures of the arc = π *r/ 2
