In Exercises 27 to 30, fill in the missing reasons for each geometric proof.
Given: 


Prove: 

PROOF  
Statements  Reasons 
1.

1. ? 
2.

2. ? 
3.

3. ? 
Exercises 29, 30
To find:
The missing reasons for the geometric proof.
Given:
The given table is shown below.
PROOF  
Statements  Reasons 
1. 
1. ? 
2. 
2. ? 
3. 
3. ? 
Properties:
1. According to AngleAddition postulate, if point
2. The Subtraction Property of Equality states that if a number is subtract from one side of an equation then the same number must be subtracted from the other side of equation to maintain the equality of the original equation.
Calculation:
The first statement of the proof is given below.
Therefore, the first reason of the proof is Given.
Now, go from first statement to the second statement.
According to AngleAddition Postulate, the sum of the measures of
Therefore, the second reason is AngleAddition Postulate
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