## karatechopper 3 years ago Incenters. (Geometry) Have to find measures. Picture being uploaded.

1. karatechopper

I am trying to fine AU. And Angle ARU. I think i have what i need for AU. Just need some confirmation.

2. karatechopper

Since TA is 20. I started thinking about the Bisecting thing. And I am saying that AU is also 20. Because KP bisects in Angle TAU

3. karatechopper

...Am i right on that?

4. hartnn

yes, AU is 20, but how did u prove it ?

5. karatechopper

Well i kind of thought through it. Since the lesson is about Bisectors. I gave a thought that angle TAU was being bisected by KP. And if angle TAU was being bisected, and TA was 20; then AU must also be 20.

6. hartnn

that can be proved by proving triangles congruent just saying will not be enough IF u need to show your work.

7. hartnn

else reasoning is correct

8. karatechopper

Ok! And how should i figure out what the measure of angle ARU is? I am stuck there.

9. hartnn

thats even simpler, AR bisects angle R

10. karatechopper

OH!!! SO then 40 degrees?

11. hartnn

yup :)

12. karatechopper

Yuuuss thanks!!

13. hartnn

welcome ^_^