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Mathematics 11 Online
OpenStudy (anonymous):

Can someone please check my answer? :) Thanks! I have attached the pictures below.

OpenStudy (anonymous):

OpenStudy (anonymous):

9. 180-50=130 10. 180-43=137 11. I'm not sure how to do this one... 12. 180-63=117

OpenStudy (anonymous):

cant see 9/10 11 b=55 360-(209+96) 12 90-63=27

OpenStudy (anonymous):

Thank you! How did you get those answers? I was told to always subtract by 180 when solving for angles...:/

OpenStudy (anonymous):

well for number 12 the angle is a right angle which means it is 90 degrees (right angles are indicated with a box in the corner) for number 11 imagine if you drew a circle around the angles, a circle contains 260 degrees, there fore the angle left (b) is just the difference between 260 and the other known angles. sorry for the text wall

OpenStudy (anonymous):

So, the ones with a circle I would subtract by 260? I knew that about right angles but for some reason it slipped my mind while I was solving. Thank you! Also, when it isn't a right angle, would you subtract by 180 or is that wrong?

OpenStudy (anonymous):

@Madds96 im sorry i mistyped I meant 360* A straight line is 180

OpenStudy (anonymous):

It's okay! :) lol So, I tried doing it the way you had typed it out and it came out totally wrong...

OpenStudy (anonymous):

if you need more help post here or something I can help you out.

OpenStudy (anonymous):

Okay, thank you! I will screen shot the angles and attach them to here.

OpenStudy (anonymous):

OpenStudy (anonymous):

OpenStudy (anonymous):

OpenStudy (anonymous):

9 180-50 =30 10 vertical angles are always equal so b =43 13 180-35=145 14 don't be fooled this one is a right angle so b=90-29=61 15 this one is a circle so 360 -(94+243)=23 16 this one is still a straight line ignore the other bits of the triangle so b=180-49 =131 17 again this is a vertical angle so b=90 18 vertical angles again b=73

OpenStudy (anonymous):

BAM DONE

OpenStudy (anonymous):

Thank you sooo sooo much! You have no idea how much I appreciate it! :3 P.S. On question 9, do you mean 130 instead of 30?

OpenStudy (anonymous):

shoot yeah my bad typing too fast

OpenStudy (anonymous):

LOL sorry

OpenStudy (anonymous):

Its all good! I just wanted to make sure I didn't miss a step when I did it. lol Thank you so very much! You're awesome! :3

OpenStudy (anonymous):

No problem! Thanks for becoming my fan :D

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