Question

in the given figure AC and BD are the diagonals of kite ABCD with AB is equal to Ad whiles

Answer 1

We know that ABCD is a kite

So, AB=AD and BC=CD.

And EFGH are mid points of AB ,BC,CD,AD  

Now in order to prove that  EFGH is a rectangle

We will first of all construct this:

join AC and BD.

In ΔABD  the E and F are mid points.

so we can write this as:  

EF ║BD  

EF = 1/2 BD    (this will be an equation 1) (here will be using the mid point theorem)

In Δ BCD  

G and H are mid points.

Which means GH║ BD  

GH=1/2 BD  (this will be an equation 2)  

From the equation (1) and (2)  

We can easily see that  

EF║ GH  

and

EF = GH ( these are the opposite sides of quadrilateral

EFGH is a parallelogram)

We know that  ABCD is a kite so the diagonal intersect at 90.

So ∠AOd= 90

90 is the final answer for this question.

If there is any confusion please leave a comment below.