9.2. Tangent Lines http://www.ck12.org
- Circles tangent atTare centered atMandN.STis tangent to both circles atT. Find the radius of the smaller
circle ifSN⊥SM,SM= 22 ,T N=25 andm^6 SNT= 40 ◦. - Four circles are arranged inside an equilateral triangle as shown. If the triangle has sides equal to 16 cm, what
is the radius of the bigger circle? - Circles centered atAandBare tangent atW. Explain whyA,BandWare collinear.