There are a variety of gaslighting techniques that an abusive partner might use: Withholding: the abusive partner pretends not to understand or refuses to listen. Ex. Countering: the abusive partner questions the victimâs memory of events, even when the victim remembers them accurately.
If two lines are perpendicular, then they meet to form. right angles. Theorem 1.7.1: If two lines meet to form a right angle, then these lines are perpendicular. âif and only ifâ. âiffâ. Theorem 1.7.2: If two angles are complementary to the same angle (or to. congruent angles) then these angles are congruent.
1 When asked to find an equation that is perpendicular to a given equation, sometimes students believe that the perpendicular line MUST have the same y-intercept. 2  This is not necessary in order for two lines to be perpendicular. 3  Students think a slope of 0/2 and slope of 0/-4 are neither parallel nor perpendicular.