Given that two tangent lines are constructed from the shared point a outside a circle to the points of tangency b and c, what is the measurement of ab if ac measures 2 cm? a) 1 2 cm b) 1 cm c) 2 cm d) 4cm

Answer : 2cm

Given that two tangent lines are constructed from the shared point A outside a circle to the points of tangency B and C.

A is the external point

B and C are the point of tangency. AB and AC are the two tangent lines that meet at external point A.

The length of tangent lines from an external point is same.

So length of AB = length of AC

AC measures 2 cm so AB = 2cm

a .4y4

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