Question

In an isosceles triangle, the vertex angle is twice either base angle ( Let the base angle be B in degree. Remember that the sum of angle of a triangle is 180 degree )
chapter : simple Equation
standard 7
exercise no 4.1
6- 4 rth question ​

Answer 1

Step-by-step explanation:

base angle is b

so vertex us 2b

so,

b+b+2b = 180

4b=180

b= 45

base angles are 45 and vertex is 2×45 = 90