Prove Theorem 6-4.
Given: m AB = m CD in circle p
Prove m<1 = m<2
SEE PICTURE

Answer:
Hence Proved m∠1 = m∠2.
Step-by-step explanation:
We need to Prove m∠1 = m∠2
Solution:
Statement Reason
m arc AB = m arc CD Given
Now we know that by theorem;
"Central angle is always equal to arc subtended by it."
m∠1 = m arc AB, m∠2 = m arc CD Central angle (∠) = m arc
Now substituting the values in above step we get;
m∠1 = m∠2 Substitution
Hence Proved m∠1 = m∠2.