Four Tangent Circles (Posted on 2003-10-20)

Four circles are tangent to each other and to a triangle that surrounds them, as shown in the figure. Each of the three circles in the corners have a radius of 1 cm. What is the radius of the circle in the middle?

No Solution Yet	Submitted by Bryan
Rating: 4.2500 (8 votes)

	Subject	Author	Date
	answer	K Sengupta	2007-05-19 23:12:05
	Exterior Angle	Bractals	2004-08-12 02:06:55
	unique???	Jim	2004-08-11 08:58:55
	re: not that dificult...	karin	2004-03-18 13:32:15
	re: not that dificult...	karin	2004-03-18 13:32:15
	not that dificult...	karin	2004-03-18 13:15:29
	Solution	Antonio	2003-12-02 01:11:36
	Spreadsheet solution	Charlie	2003-10-21 10:35:16
	re: solution	Brian Smith	2003-10-21 09:30:20
	My solution	Ashlee	2003-10-21 05:18:23
	re(2): solution	SilverKnight	2003-10-20 22:54:07
	re: solution	Tristan	2003-10-20 22:22:33
	solution	SilverKnight	2003-10-20 18:23:10