## ErikaaLynn Group Title 6. The sum of the measures of two exterior angles of a triangle is 264o. What is the measure of the third exterior angle? (3 points) 7. How many sides does a regular polygon have if each exterior angle measures 72o? (2 points) one year ago one year ago

1. hartnn Group Title

ok, do u know what how much does the angles in a triangle add up to ?

2. ErikaaLynn Group Title

sii yess lol

3. hartnn Group Title

sii ?

4. ErikaaLynn Group Title

sii is yes in spanish lol

5. hartnn Group Title

anyways, so, let the 3 angles be A,B,C so, A+B+C= .....? Exterior angles are 180-A, 180-B,180-C right ?

6. ErikaaLynn Group Title

yea

7. hartnn Group Title

so, its given as 180-A + 180-B = 264 can u find A+B from this ?

8. ErikaaLynn Group Title

um no

9. ErikaaLynn Group Title

is it 84?

10. hartnn Group Title

what A+B = 84 ? no.

11. ErikaaLynn Group Title

idk im not good at math

12. hartnn Group Title

180-A + 180-B = 264 here u get 360 -(A+B) = 264 now try to fin A+B

13. ErikaaLynn Group Title

96

14. hartnn Group Title

yes, A+B = 96 now from A+B+C = 180, can u find C ?

15. ErikaaLynn Group Title

um how do i do that

16. hartnn Group Title

96+C =180 C=... ?

17. ErikaaLynn Group Title

84

18. hartnn Group Title

yup, so the exterior angle will be 180-C = 180 -84 =... ?

19. ErikaaLynn Group Title

86

20. hartnn Group Title

86 or 96 ?

21. ErikaaLynn Group Title

96

22. ErikaaLynn Group Title

?

23. hartnn Group Title

yes, its 96 thats the final answer for 1st.

24. ErikaaLynn Group Title

okay thanks :) and the other one ?

25. hartnn Group Title

ok, exterior angle = 72, interior angle = 180-72 =... ?

26. ErikaaLynn Group Title

108

27. hartnn Group Title

right . now use the formula to get number of sides (n) Interior angle = 180 * (n-2) /n

28. ErikaaLynn Group Title

okay u lost me lol

29. hartnn Group Title

108 *n = 180 *(n-2) 108n = 180n -360 can u find n from here ?

30. ErikaaLynn Group Title

um i dnt get it

31. hartnn Group Title

n = 360/72 = 5 sides.

32. ErikaaLynn Group Title

ohh so its 5

33. hartnn Group Title

yup.

34. hartnn Group Title

just the use of a formula...

35. ErikaaLynn Group Title

ohh thank you so much

36. hartnn Group Title

welcome ^_^

37. Mcwoodman Group Title

Not trying to be rude but yes in Spanish is Cie.

38. Nutcase482 Group Title

No, it's si

39. Mcwoodman Group Title

My Spanish teacher taught me wrong!

40. iambatman Group Title

profiled.