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Mathematics 12 Online
OpenStudy (anonymous):

please help ??? question in comments !!

OpenStudy (anonymous):

OpenStudy (matt101):

Your answer is correct! The sum of all angles in a triangle is 180 degrees. You have two of the three angles given, so the third is equal to 180 minus the first two.

OpenStudy (anonymous):

Could you help me with one more ? I'm pretty lost

OpenStudy (matt101):

Sure

OpenStudy (anonymous):

OpenStudy (matt101):

The angle of a straight line is 180 degrees as well. This angle has been split into 3 parts, and once again you have 2 of them. To find the third angle, you need to...?

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