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OpenStudy (calculusxy):
if the vertex angle of an isosceles triangle is 30, what is the value of the angle that is exterior to one of the base angles
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OpenStudy (anonymous):
don't you have to find the other 2 angles of the triangle first
OpenStudy (calculusxy):
Is it 150? I think it's like a supplementary angle.
OpenStudy (anonymous):
well, all the angles in a triangle add up to 180. since its an isosceles , the other two have to be congruent. therefore each angle is 75.
OpenStudy (anonymous):
|dw:1389314239359:dw| NOT TO SCALE LOL
OpenStudy (anonymous):
|dw:1389314309846:dw|
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