In the following figure (not to scale) AB is the common tangent to the circles C1 and C2, where C1, and C2, are touching externally at C, AD and DC are two chords of the circle C1, and BE and EC are the two chords of the circle C2. Find the measure of ∠ADC + ∠BEC?

In the following figure (not to scale) AB is the common tangent to the

1.	In the following figure (not to scale) AB is the common tangent to the circles C1 and C2, where C1, and C2, are touching externally at C, AD and DC are two chords of the circle C1, and BE and EC are the two chords of the circle C2. Find the measure of ∠ADC + ∠BEC?
A.	120°
B.	100°
C.	60°
D.	90°
Answer» E.

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In the following figure (not to scale) AB is the common tangent to the circles C1 and C2, where C1, and C2, are touching externally at C, AD and DC are two chords of the circle C1, and BE and EC are the two chords of the circle C2. Find the measure of ∠ADC + ∠BEC?

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