The angle k will be 100 in the triangle KJL and the side HI will be 4.
A triangle is a plane figure formed by the three sides having sum of the angles 180 degree.
Here in triangle KJL we can see that it is a isosceles triangle So the angle j and angle L will be 40.
Now we can solve
[tex]\angle L + \angle J + \angle K=180\\\\\\40+40+\angle K=180\\\\\\\angle k=180-80\\\\\\\angle k=100[/tex]
Now the side HI in the triangle HGI
We can see that the triangle HGI is the equilateral triangle so the all sides will be equal so
[tex]HI=IG=GH=4\[/tex]
Hence the angle k will be 100 in the triangle KJL and the side HI will be 4.
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