I’m not gonna lie I don’t know the answer I’m just answering random questions to get points I’m so sorry
Changing the order may not affect the answer in some situation, however it's not a rule.
True!
all parabolas with vertical directrix DO open to the left/right.
the distance formula to find the length of the sides... opposite sides equal it could be a rectangle or parallelogram all sides equal, square or rhombus adjacent equal, kite and then the slope is used to check angles if the product of the 2 lines in -1 the lines are perpendicular (right angle) the the slopes of 2 lines are the same the sides are parallel.
I think this is it ^_^