Question

Help with geometry:

Find the radius of the inscribed circle in the isosceles trapezoid whose bases are "a" and "b" centimeters.

I don´t know how use the fact of the trapezoid to be isosceles.

Any idea? Thanks.

Answer 1

Hmm... http://mathworld.wolfram.com/IsoscelesTrapezoid.html

The only thing I have so far is that h=2r.

Answer 2

huppp... this's hard to drawing :)