Question

what is de? de =

Explanation:

Step1: Observe congruent - triangle property

The figure suggests that triangles $\triangle DCE$ and $\triangle BCE$ are congruent (by Hypotenuse - Leg congruence criterion as the perpendicular line from $C$ to $DB$ and the equal - side markings).

Step2: Apply congruent - side property

Since the two triangles are congruent, corresponding sides are equal. So $DE = BE$.

Step3: Determine the value of $DE$

Given $BE = 72$, then $DE=72$.

Answer:

72