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Magoosh - 数学PS - 380
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In the diagram above, the triangle is equilateral with a side of 2. All three circles are of equal size and all are tangent to each other and to two sides of the triangle. Which of the following is the radius of one of the circles?
  • A$$1+\sqrt{3}$$
  • B$$2-\sqrt{3}$$
  • C$$\frac{\sqrt{6}}{4}$$
  • D$$1-\frac{\sqrt{3}}{2}$$
  • E$${\sqrt{3}-1}\over{2}$$
显示答案
正确答案: E

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