Which table correctly organizes transformations into those that always preserve congruence and those that may not always preserve congruence?

1234567891011 match the reasons with the statements in the proof. given: j | | k m 1 = m 3 prove: l | | m 1. j||k, m∠3 = m∠1 if lines are ||, then corresponding angles are =. 2. m∠1 = m∠2 if alternate interior angles are =, then lines are ||. 3. m∠2 = m∠3 substitution 4. l||m given

1. what is the measure of ∠abc? what is the measure of ∠abd?

Which equation represents a line that is parallel to the line whose equation is 3x-2y=7( show all work)