Question

AD||CB
AB||CD
m2A = 90
AC = 8
find DE​

Answer 1

Answer:  DE is 4

Step-by-step explanation:

Alright, lets get started.

Since given that AD is parallel to CB.

And AB is parallel to CD.

And the angle A is given as 90°

It means the given figure is a rectangle.

And the diagonals of the rectangle are equal to each other.

So, $DB=AC$

So, $DB=8$

Now the diagonals bisects each other. So

$DE=\frac{DB}{2}$

$DE=\frac{8}{2}$

$DE=4$

Hence the answer is 4 ...     Answer

Hope it will help :)