Question

find the green angle​

Answer 1

Given :  A Quadrilateral  

To Find  : Green angle

Solution:

Green angle is 40°

To Find this we need to do some construction

Draw the line   at 60 deg angle so  that Equilateral triangle is formed

Hence 3 sides  will b equal

now  in another triangle  both angles = 30 deg

Hence that side = Equilateral triangle side

Also  Sin 30° = 1/2  = P/H

Hence Larger base = 2 * one side of  Equilateral Triangle

Hence line drawn will meet at the point where angle is 80 deg

now triangle having 80 deg angle is also isosceles triangle

so finally using isosceles triangle we get  angle 70 deg

and green angle = 40 deg

Ref : the picture where  all angles are shown : then it will be more clear that

how green angle is 40 deg.

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Answer 2

Answer:

Given question is not complete no unique answer can be arrived with the data given., there can be many answers. Ans 40° as explained in brainiest answer is only valid if base point at 80° intersection is given as mid point of base. else if we extend base and one diagonal as shown by the hand drawn lines will satisfy all the angles but green angle will change.