In Exercises 21 and 22, complete each proof.
Given: 


Prove: 


PROOF  
Statements  Reasons  
1.

1.


2.

2.


3.

3. If two


4.

4.


5.

5.


6.

6.


7.

7. Multiplication Property of Equality. 

8.

8. If two arcs of a


To prove:
Given:
Proof:
PROOF  
Statements  Reasons 
1. 
1. Given 
2. 
2. Interior alternative angles are always equal. 
3. 
3. If two 
4. 
4. By theorem, the measure of an inscribed angle of a circle is half the measure of its intercept arc. 
5. 
5 
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