Question

In triangle ABC, point O is the incenter, AD=2", AB=8", and BC=9". Find y.

Answer 1

given the word "incenter" , we can concede that if segment BD exist, in which OD is part, BD is median (a line that extend from the vertex angle to the midpoint of the opposite side to the vertex angle). if OD which is part of BD lies on the midpoint, therefore AD=CD.

if AD=2 , then CD(y) =2

Answer 2

I tried keying in 2 in Mathlab and it said it was incorrect? I got this answer previously when I tried to do it and I got it incorrect. :/

Answer 3

my bad,. it's not median but angle bisector,

but, anyway, they have the same sense,. i think it's 2. .

click here to check,. http://www.mathopenref.com/triangleincenter.html

Answer 4

I figured it out! It was actually 3, but thank you! :)