Answer:
74.5
Step-by-step explanation:
Since the angles are not on the center of the circle, we use this formula:
71+78/2= 74.5
The measure of the angle FDE is 74.5 degrees if in circle A, marc BC is 71° and marc EF is 78°: Points B, C, E, and F lie on Circle A option second is correct.
It is described as a set of points, where each point is at the same distance from a fixed point (called the center of a circle)
The figure is attached to the picture, please refer to the picture.
We have:
In the figure, two chords intersect each the.
The angle ∠FDE is equal to the half of the sum of the arc BC and EF:
Angle FDE = (1/2)[71+78]
Angle FDE = 74.5 degrees
Thus, the measure of the angle FDE is 74.5 degrees if in circle A, marc BC is 71° and marc EF is 78°: Points B, C, E, and F lie on Circle A option second is correct.
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