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Mathematics 18 Online
OpenStudy (openstudier777):

Help please! Medal!

OpenStudy (openstudier777):

OpenStudy (periodicninja):

it's c

OpenStudy (periodicninja):

the third answer

OpenStudy (welshfella):

Hint 139 = c + 77

OpenStudy (welshfella):

it's not c

OpenStudy (welshfella):

exterior angle of a triangle = sum of the 2 opposite interior angles that's why 139 = c + 77

OpenStudy (welshfella):

c = 139 - 77

OpenStudy (openstudier777):

What is it???

OpenStudy (welshfella):

well - do the subtraction

OpenStudy (welshfella):

- that will help

OpenStudy (openstudier777):

I did.

OpenStudy (openstudier777):

But now what? there r two answers with C = 62

OpenStudy (welshfella):

and what is the measure of < a?

OpenStudy (openstudier777):

Im not sure.. How do I find out

OpenStudy (openstudier777):

Help?

OpenStudy (welshfella):

a HInT : interior alternate angles are equal:- |dw:1467140042349:dw|

OpenStudy (openstudier777):

So A=36?

OpenStudy (welshfella):

yes

OpenStudy (openstudier777):

That means, A=36, and C=62.

OpenStudy (openstudier777):

Now for C..

OpenStudy (openstudier777):

B*

OpenStudy (openstudier777):

?

OpenStudy (welshfella):

angle b = 180 - angle c

OpenStudy (openstudier777):

Ok thsnk you! I got B=118.

OpenStudy (welshfella):

correct

OpenStudy (welshfella):

angles on a straight line add up to 180

OpenStudy (welshfella):

|dw:1467140258331:dw|

OpenStudy (welshfella):

< a + <b = 180

OpenStudy (openstudier777):

Ok thank you!

OpenStudy (welshfella):

yw

OpenStudy (openstudier777):

Can u help with another one.

OpenStudy (openstudier777):

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