Question

In triangle ABC, if AB=BC and ∠B = 100°, ∠A will be​

Answer 1

Answer:

90°

Step-by-step explanation:

very simple answer

samajh aa Gaya ho ga

Answer 2

Answer:

the angle sum property of triangle says the sum of all the angle of a triangle is 180

so angle b +c+a = 180

angle c= angle a (angle opposite to equal side)

so let's take angle a as x , and angle c also as x (because a=c)

angle a+angle b+ angle c=180

x+100+x=180

2x=180-100

x=80/2=40

so the value of angle a is 40