Question 165
In the quadrilateral $ABCD$ the following holds:
$$
\angle ABC = \angle ADC = 90^\circ, \quad |AB| = |BC|, \quad |CD| + |DA| = m.
$$
Determine the area of $ABCD$ in terms of $m$.
$$
\angle ABC = \angle ADC = 90^\circ, \quad |AB| = |BC|, \quad |CD| + |DA| = m.
$$
Determine the area of $ABCD$ in terms of $m$.