2016 April(73E) Math Question 52

Angles

- Circles

52. From point A outside a circle and in the same plane as the circle, 2 rays are drawn tangent to the circle with the points of tangency labeled B and C, respectively. Segment BC is then drawn to form LABC. If A measures 70°, what is the measure of ABC ?

Choice B

52. From point A outside a circle and in the same plane as the circle, 2 rays are drawn tangent to the circle with the points of tangency labeled B and C, respectively. Segment BC is then drawn to form LABC. If A measures 70°, what is the measure of ABC ?

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