Question

the ratio between the vertical angle and base angle of an isosceles triangle is 2:5. find the angle of the triangle.​

Answer 1

Step-by-step explanation:

it is an isosceles triangle

so two angles are equal of isosceles

so, let one angle be 2x

second angle be 2x

third angle be 5x

so, 2x. + 2x + 5x = 180 (sum of all angles of triangle)

9x = 180

x = 20

so first angle - 2x = 2 x 20 = 40

second angle - 2x = 2 x 20 = 40

third angle - 5x = 5 x 20 = 100

hope it helps you