Let-ABCD-be-a-quadrilateral-with-an-inscribed-circle-Prove-that-the-circles-inscribed-in-triangles-ABC-and-ADC-are-tangent-to-each-other-

Question Number 16958 by Tinkutara last updated on 28/Jun/17

Let A B C D be a quadrilateral with an

inscribed circle . Prove that the circles

inscribed in triangles A B C and A D C

are tangent to each other .