Question

The angle of the triangle are in ratio 2:1:3. Find the angles. In an isosceles triangle one of the angle is 100°, find the other angles.

Answer 1

hope it helps.........

Answer 2

let the angle of the triangle = 2x , x and 3x

the sum of all angle in a triangle is equal to 180°

so

2x + x + 3x = 180

6x = 180

x =180 ÷ 6

x = 30°

so the angle of triangle = 60° , 30° and 90°

in a isosceles triangle two angles are equal

let they are x°

so

x + x + 100 = 180

2x = 180 - 100

2x = 80

x = 40°