Question

In an isosceles triangle,the vertical angle is twice the sum of the base angles.Calculate the angles of the triangle.

a)40o ,40o ,1000
b)300 ,300 ,1200
c)450 ,450 ,900
d)50o ,500 ,80o​

Answer 1

Answer:

In an isosceles triangle,the vertical angle is twice the sum of the base angles.Calculate the angles of the triangle.

a)40o ,40o ,1000

b)300 ,300 ,1200

c)450 ,450 ,900

d)50o ,500 ,80o

Answer 2

Answer:

(c) 45°,45°,90°

Step-by-step explanation:

let the base angle be = X°

therefore , vertical angle = 2x°

The sum of all angles of triangle = 180°

2x+x+x = 180°

4x = 180°

x= 180°/4

x= 45°

so the angles of triangle = (c) 45°, 45°,90°