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Mathematics 8 Online
OpenStudy (anonymous):

the measure of base angle of an isosceles triangle is 4 times the measure of the vertex angle . the number of degrees in the vertex angle is 1) 20 2) 36 3) 30 4) 135

OpenStudy (arabpride):

|dw:1388611095603:dw| We can work out the problem from there...

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