Need this question badly

What is the length of the segment joining the points at (4,5) and (6,-2) round to the nearest tenth if necessary

What is the distance between the points (2 -3) and (-6 4) on the coordinate plane

Given: transversal t passed through parrallel lines r and s. prove: < 3 = < 6 < 4 = < 8what is the next step in the proof? choose the most logicsl approach