Question

it is given that quadrilateral abcd is a kite. we know that $overline{ad}congoverline{cd}$ by the definition of kite. by the kite diagonal theorem, $overline{ac}$ is congruent to $overline{bd}$. this means that angles aed and ced are right angles. we also see that $overline{ed}congoverline{ed}$ by the property. therefore, we have that

Explanation:

The reflexive property states that any geometric figure (in this case, a line - segment $\overline{ED}$) is congruent to itself.

Answer:

reflexive