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Mathematics 15 Online
OpenStudy (anonymous):

Which angle has the greater measure? Angle B Angle C Angle A The angles are congruent

Directrix (directrix):

Diagram?

OpenStudy (anonymous):

OpenStudy (anonymous):

sorry it took me a while

OpenStudy (anonymous):

would it be angle A ?

Directrix (directrix):

Is this triangle given to be equilateral or is there any other information about it?

hartnn (hartnn):

A = E+C so A is definitely greater than C

Directrix (directrix):

Angle A is an exterior angle of the triangle as its measure is equal to that of <E + <C. m<A = <E + <C

OpenStudy (anonymous):

hartnn (hartnn):

can't really decide A is greater or C if the diagram is to scale, then yeah, A

hartnn (hartnn):

A is greater or B**

OpenStudy (anonymous):

yup A is greater than c and b

hartnn (hartnn):

if B is acute, then surely A

Directrix (directrix):

Why is the measure of <A greater than that of <B?

hartnn (hartnn):

A+B = 180

hartnn (hartnn):

if B is acute A is greater if A is acute, B is greater

hartnn (hartnn):

if that figure is on scale, B is acute

Directrix (directrix):

There is no information given to indicate that the triangle is drawn to scale. So, I don't know.

OpenStudy (anonymous):

i'll just go with A i guess..

hartnn (hartnn):

if you had to select one, then you would assume B is acute, right ?

OpenStudy (anonymous):

yes and if B is acute then A is greater right?

hartnn (hartnn):

i'd go for A too :)

hartnn (hartnn):

yes, C is out of question. go for A

OpenStudy (anonymous):

ok thanks

Directrix (directrix):

Is this the same problem? http://openstudy.com/study#/updates/526f3fa6e4b0e209601e59bf

Directrix (directrix):

I think that problem was done by inspection.

hartnn (hartnn):

it wasn't decided there too,but the most logical choice is A

hartnn (hartnn):

let us know if you got that correct or not :)

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