Question

In an isosceles triangle, a base angle is four times its vertical angle. Find all the
angles of the triangle.​

Answer 1

Answer:

a = 20 b = 80 c = 80

Step-by-step explanation:

sum of all angles of a triangle is 180

a + b + c = 180

in isosceles triangle two angles are equal

b=c

a + 2b = 180

base angle is 4 times the vertical angle b= 4a

a + 2(4a) = 180

a + 8a = 180

9a = 180

a = 180/9= 20

b = c = 4a = 4×20 = 80

a = 20 b = 80 c = 80

HOPE YOU GET YOUR ANSWER