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°.

http://tinypic.com/r/1z53sb5/6

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

Question

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°. 

http://tinypic.com/r/1z53sb5/6

Using the two given properties, Kim can prove that triangle ADB is congruent to triangle BCA using the _________ Postulate.

anonymous · Answer

the triangle postulate states that the sum of the angles of a triangle is two right angles. This postulate is equivalent to the parallel postulate

anonymous · Answer

is it triangle postulate or parallel postulate..

anonymous · Answer

They are both the same i would go with Triangle postulate since you are dealing with traingles

anonymous · Answer

thanks! you've been helping me out a lot haha