Question

in an isosceles triangle each of the base angles is 40 degree then the triangle is​

Answer 1

Step-by-step explanation:

Triangle ABC is an isosceles triangle in which base angle is 40

o

and AB=AC

∠A+∠B+∠C=180

o

⟹∠A=180

o

−40

o

−40

o

...Angle sum property

⟹∠A=100

o

Therefore, triangle ABC is an obtuse-angled traingle.

Answer 2

hy gm...

40°+40°+ x°= 180°

80°+x=180

x°=180-80 = 100°

It is obtuse isosceles triangle