Question

HELP? (:
Theorem: The diagonals of a rectangle are congruent.

Kim is writing the proof of the theorem using two properties of a rectangle as shown below.

• The opposite sides of a rectangle are congruent and parallel.
• Each angle of a rectangle is 90°.



Using the two given properties, Kim can prove that triangle ADB is congruent to triangle BCA using the _________ Postulate