# In abc ai bi and ci are internal angle bisectors of a

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17.InABCAI, BI and CI are internal angle bisectors ofA,B &C respectively. ID, IE & IF are the inradii. IfAB = 24 cms, AC = 28 cms and BC = 32cms. What is thelength of BD?(1) 11 cms(2) 12 cms(3) 13 cms(4) 14 cms
18.InABC, AB = 10 cms, BC = 24 cms, AC = 26 cms andB = 900. Find the radius of the circle inscribed in ABC.(1) 1 cms(2) 4 cms(3) 3 cms(4) 2 cms19.In ABC, AB = 30units, BC = 26units & AC = 35 units. If AD isan internal angle bisector,what is the length of BD?
20.In an equilateralABC, AD is the internal angle bisectorofBAC, BD is the external angular bisector ofCBE.AB is extended to E. FindDBC – 1/2 (BCA)
21.ABC is a triangle with AB = 12cms & AC = 6 cms,andBAD =CAD = 600. D lies on BC. Find AD
22.In a triangle ABC, lengths of the sides AB and AC are 17.5cm and 9 cm respectively. Let D be a point on the linesegment BC such that AD is perpendicular to BC. IfAD = 3cm, then what is the radius (in cm) of the circlecircumscribing ABC?
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