The least squares method is a mathematical procedure used to identify the linear equation that best fits a set of ordered pairs.
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Answer:
The missing reason for the 3rd step in the proof below is;
C. Vertical angles are congruent
Step-by-step explanation:
In the two column proof, we have;
Statement Reason
1. AB ║ CD 1. Given
2. ∠3 ≅ ∠7 2. Corresponding angles theorem
3. ∠7 ≅ ∠6 3. <u>Vertical angles are congruent</u>
4. m∠3 = m∠7 4. Definition of congruence
m∠7 = m∠6
5. m∠3 = m∠6 5. Substitution
6. m∠3 ≅ m∠6 6. Definition of congruence
Vertical angles are the angles formed on the opposite sides of two straight lines when they cross each other
Other vertical angles in the diagram are;
1) ∠5 and ∠8
2) ∠1 and ∠4
3) ∠2 and ∠3