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Mathematics 15 Online
OpenStudy (infinexa):

Write a list of steps that are needed to find the measure of ∠b

OpenStudy (infinexa):

Here is the triangle.

OpenStudy (infinexa):

@perl

OpenStudy (hey199):

∠C is 180-113 Abgle of triangle add up to 180 ∠B = 180 - (∠A + ∠C)

OpenStudy (infinexa):

you got that from yahoo answers

OpenStudy (infinexa):

@JoannaBlackwelder

OpenStudy (hey199):

thats the right answer

OpenStudy (perl):

You can use the exterior angle theorem. \( \angle C = \angle A + \angle B \)

OpenStudy (infinexa):

Ok

OpenStudy (infinexa):

So C = A + B

OpenStudy (infinexa):

@perl

OpenStudy (perl):

yes

OpenStudy (perl):

113= 72 + B

OpenStudy (infinexa):

@perl But that means, B=41, if a triangle is 180 degrees, how does that workout.

OpenStudy (perl):

a triangle always adds up to 180 degrees

OpenStudy (infinexa):

Yea, So, I understand that B= 41, but what is the answer in the end.

OpenStudy (perl):

The question says to find a list of steps to find angle B. So if you use the exterior angle theorem that should be enough.

OpenStudy (infinexa):

Ok thanks, I will give you a medal.

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