## mariapernez11 3 years ago find the measure of each of the angles of a regular 8-sided polygon. The measure of each of the angles of a regular 8-sided polygon is?

1. sasogeek

hi

2. sasogeek

umm do you have an idea what you're supposed to do?

3. mariapernez11

no I don't could u show me an example. I have two more of these two do

4. sasogeek

ok so let's see if you get this. if you can find the total sum of all the angles and divide it by the number of angles, you can get the value of one of the angles... makes sense?

5. mariapernez11

yes it makes sense

6. sasogeek

do you know how to find the sum of all the angles of a polygon though?

7. mariapernez11

no

8. sasogeek

there's a formula for it. Sum = (n-2)*180 where n is the number of sides of the polygon, in this case 8.. so let's do the first part. find the sum of the angles and tell me what you got :)

9. mariapernez11

ok

10. mariapernez11

1,080

11. sasogeek

well done :) now how many angles does an 8 sided polygon have...?

12. mariapernez11

5

13. sasogeek

let's find out

14. sasogeek

|dw:1345169715398:dw| \(\huge 8\ sides \ 8\ angles \)

15. mariapernez11

I see what I done wrong. thanks for showing me. I have one more problem if you can show me how to do it. It has to do finding coordinates.

16. sasogeek

what did u get as ur answer for this one?

17. mariapernez11

135

18. sasogeek

well done :) i hope you can do the rest now...

19. mariapernez11

P(0,0)>P_____ Q(-1,1)>Q_____ R(-9,-3)>R_____ S(7,14)>S_____ T(r,s)>T____

20. sasogeek

if you have another question, please post it as a new question :) on the left side x

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