MathDB

9

Part of 1988 India National Olympiad

Problems(1)

Indian Mathematical Olympiad 1988 - Problem 9

Source:

8/14/2009
Show that for a triangle with radii of circumcircle and incircle equal to R R, r r respectively, the inequality R≥2r R \geq 2r holds.
geometrycircumcircleinequalitiesgeometry proposed