Question

In an isosceles triangle the vertex angle is equal to 40. Find the measure of all the angle of triangle?

Answer 1

Answer:

kindly see the answer below...

Step-by-step explanation:

Here,

we know that a triangle has three angles...

as like this an isosceles triangle has

$two \: equal \: angles \: and \: one \: vertex \: angle$

$and \: sum \: of \: the \: angles \: of \: a \: triangle = 180$

then,

let the vortex angle be X =40°

and the equal angles be y...

therefore,

$x + y + y = 180$

$or \: 2y = 180 - 40$

$or \: y = \frac{140}{2}$

$or \: y = 70$

so, the measures of the angles of the isosceles triangle is

40° , 70° and 70°...

thanks a lot...