Angles in circles (problem session)

Guided practice

Three circles with radius one are drawn tangent to each other, and an equilateral triangle is drawn so that each side is tangent to two circles. What is the side length of the triangle?

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XY is tangent to both circle O and P. Find XY if OP―=40 and O has radius 31, and P has radius 7.

prob-12-22.png

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