A triangle has corners at #(2 , 6 )#, #(3 ,9 )#, and #(4 ,8 )#. What is the radius of the triangle's inscribed circle?
1 Answer
Feb 24, 2017
Explanation:
Name the points
By the Distance Formula,
This means that
The in-radius
where
For a right triangle, the in-radius
where
Therefore, the in-radius