Question

In a exterior angled triangle ABCD AB=AC angle a=40 degree find exterior angle​

Answer 1

Answer:

As AB=AC

Therfore, c=40

Angle sum property of triangle=180

40+x+x=180

2X=180-40

X=140÷2=70

The exterior angle=sum of opposite interior angle

=2x

=2×70

=140.