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## kymy_rose00 Group Title Find the value of x. The diagram is not drawn to scale. one year ago one year ago

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1. kymy_rose00

2. slaaibak

Do you know to what number of degrees a pentagon's angles add up to?

3. kymy_rose00

i think 360 degrees

4. slaaibak

Nope, that's a square. It adds to 540. Now try set up an equation by summing the angles given to 540.

5. slaaibak

Note: All the angles are given. Some are just in terms of x

6. kymy_rose00

(2x+10) ? 140 ? (2x) ? 112 = 540

7. Carniel

540 - 350 (All angles without variables added) = 190 Now just find x =D

8. kymy_rose00

i need more help..

9. slaaibak

you were on the right path. (2x+10) + 148 + (2x) + 112 = 540 Now just solve for x.

10. jim_thompson5910

you're missing the 90 degree angle slaaibak

11. kymy_rose00

so whats the equation @jim_thompson5910

12. jim_thompson5910

it should be 90 + (2x+10) + 148 + (2x) + 112 = 540 just add on the 90 degree angle

13. Carniel

The little square or angle in the corner is the 90 degree

14. kymy_rose00

90 + (2x+10) + 148 + (2x) + 112 = 540 350 + (2x+10) + (2x) =540

15. jim_thompson5910

good so far

16. kymy_rose00

350 + (2x+10) + (2x) =540 (2x+10) + (2x) = 190

17. jim_thompson5910

good, then what?

18. slaaibak

oh yeah, lol, I copy pasted hers and forgot about that 90. mybad.

19. kymy_rose00

2x + 2x + 10 = 190 4x = 180 ?

20. jim_thompson5910

then your last step is to what?

21. jim_thompson5910

if 4x = 180 then x = ???

22. kymy_rose00

x = 45

23. jim_thompson5910

you got it

24. Carniel

=D I forgot CLT lol fail