Question

In a isosceles traingle.<1=<2and <2=2<3 find the angles of the traingle

Answer 1

<1+<2+<3=180
<2+<2+<2/2=180 ..... . ......(from given)
2<2+<2/2=180
4<2+<2=360
5<2=360
<2=72
therefore <1=72
<3=2(72)=144