4 Let be a rectangle with and . Suppose is the radius of the circle passing through and touching; and similarly is the radius of the circle passing through and and touching . Show that
4 Hayaan maging isang parihaba na may at . Ipagpalagay ay ang radius ng bilog na daan at makabagbag-damdamin At katulad ay ang radius ng bilog na daan at at sa paghawak . Ipakita na