In the picture, the perpendicular is drawn from the midpoint of the hypotenuse of a right triangle to the base.

Calculate the length of the third side of the large right triangle and the lengths of all three sides of the small right triangle.
Let a right angled triangle DEF,

H and G are mid points of DF, DE respectively
Here by pythagorous,
![]()
![]()
![]()
![]()
Since H and G are mid-points of DF, DE respectively. We can have
![]()
![]()
By pythagorous theorem,
![]()
![]()
![]()
![]()
Hence length of third side of larger triangle is 6cm
And 3cm, 4cm, 5cm are lengths of sides of smaller triangle.