Question

18.In an isosceles triangle, the base angles are equal. The vertex angle is 40 degree. What are
the base angles of the triangle ?
com 40° C at the rate​

Answer 1

$since \: the \: sum \: of \: all \: angles \: of \: a \: \\ triangle \: is \: 180 \: degree \\ let \: the \: base \: angles \: be \: x \\ \\ therefore \: \\ => x + x + 40 = 18 0 \\ => 2x = 180 - 40 \\ => 2x = 140 \\ => x = \frac{140}{2} \\ => x = 70 \\ \\ hence \: the \: base \: angles \: of \: the \: \\ triangle \: are \: 70 \: and \: 70$

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