Question

the Vertical angle of an isosceles triangle is hundred degrees show that its base angle is 40 degree​

Answer 1

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Answer 2

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$let \:base \: angles \: be \: x \\ \\ according \: to \: question...... \\ \\ by \: using.....angle \: sum \: property \\ atq.. \\ 100 + x + x = 180 \\ 100 + 2x = 180 \\ 2x = 180 - 100 \\ 2x = 80 \\ x = \frac{80}{2} \\ x = 40 \\ \\ therefore..... \\ the \: base \: angles \: are \: 40 \: degree.$
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