1. Foreverisabell

2. roberman228

what do you need to know how to do

3. Foreverisabell

the value of x @roberman228

4. Foreverisabell

there is a picture attached above @roberman228

5. ZeHanz

It is an equilateral triangle. What can you say about the two other angles of the triangle?

6. roberman228

x=45

7. ZeHanz

8. Foreverisabell

What?

9. Foreverisabell

that they are equal, so x equals 45?

10. roberman228

zehan mention me in your ? and i'll come to it

11. Foreverisabell

wait no, cause x is equall to the opposite inner angles? so x = 80?

12. ZeHanz

Both angles in the triangle are equal. Sum of all angles in a triangle is how many degrees?

13. roberman228

exactly, x=80

14. Foreverisabell

180. @ZeHanz

15. ZeHanz

@Foreverisabell: so what is left for the two equal angles?

16. Foreverisabell

Im still confused.

17. Foreverisabell

all the angles have to equal 180 inside no?

18. ZeHanz

Sum of angles is 180. One angle is 40. Sum of other two angles is 140. The other two angles are equal, so 70 degrees each.

19. Foreverisabell

Oh alright thank you.

20. Foreverisabell

So that means x = 70 + 40?

21. ZeHanz

Yes! See, it is not that hard...

22. Foreverisabell

can you help me with one more thing?

23. Foreverisabell

24. ZeHanz

Sure!

25. Foreverisabell

I attached the picture.

26. ZeHanz

I can see it ;) If P is a centroid, then P divides QT into two pieces, QP and PT, with QP:PT =2:1 Now you know the length of QP (=14), so what would be the length of PT?

27. Foreverisabell

14 + 14? zoo. 28?

28. Foreverisabell

*sooo

29. ZeHanz

No, QP:PT=2:1, so QP is double the length of PT, so PT would be 7. So total 14+7=21

30. Foreverisabell

oh okay now I get it.