## marcoduuuh 2 years ago Find the value of x. (Picture below.)

1. marcoduuuh

2. Azteck

What's the angle sum of a straight line?

3. marcoduuuh

How do I solve for that?

4. alexeis_nicole

|dw:1358998103844:dw| 180 - 130 = θ 180 - 73 - θ = x

5. Azteck

Just tell me what the angle sum is for a straight line.

6. ashishthomas7

73+x=130

7. Azteck

@alexeis_nicole Nice. Now she can copy the answer without understanding what just happened.

8. marcoduuuh

180?

9. ashishthomas7

i think thats it

10. Azteck

Yes. So if the angle sum of a straight line is 180, then how would you find the angle beside 130

11. marcoduuuh

@ashishthomas7 so it's 57?

12. ashishthomas7

yup

13. Azteck

NO

14. marcoduuuh

15. marcoduuuh

oh?

16. Azteck

@marcoduuuh What's the triangle property that allowed you to find that it was 57?

17. ashishthomas7

|dw:1358998413448:dw|

18. Azteck

@ashishthomas7 Could you not give answers away and actually allow others to understand what's going on?

19. marcoduuuh

107?

20. Azteck

Do you know the property, exterior angle of a triangle?

21. ashishthomas7

and now applying that angles in a triangle add upto 180 x+73+180-130=180

22. alexeis_nicole

θ and 130 are supplementary angles. so to find θ we need to subtract 130 from 180. we also know that a whole triangle equals 180 degrees. so once we find θ, we are able to subtract our known valus within the triangle to find x :)

23. alexeis_nicole

values*

24. Azteck

@ashishthomas7 Already taught you a faster way to solving it using exterior angle of a triangle. \[73+x=130\]

25. ashishthomas7

thats wat i used first.... @Azteck

26. Azteck

That's why I said your name. Are you derping or something?

27. Azteck

All you did was put out an equation without telling how you got it.

28. ashishthomas7

i aslo told that after i writing the eqn scroll upward and luk...

29. marcoduuuh

Stahp trollin @Azteck brah.

30. marcoduuuh

AND IT'S NOT THAT DIFFICULT. I UNDERSTOOD HOW THE EQUATION WAS MADE YOU DERP.