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What is the missing reason for the 4th step in the proof below?

What Is The Missing Reason For The 4th Step In The Proof Below class=

Sagot :

The reason for step 4 that is missing is: definition of linear pair.

What is a Linear Pair of a Straight Line Angle?

A line pair are two angles on a straight line whose sum equals 180 degrees.

Angles ANV and ANR line on a straight line and are therefore linear pair. This implies that:

m∠ANV + m∠ANR = 180 degrees

Therefore, the missing reason is: definition of linear pair.

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