GeometryTransversalParallel lines, a transversal, and the eight angles it makes. PhysicsGraph MatchDrive the cart to match position and velocity graphs. PhysicsFour WaysOne motion shown four ways: words, motion map, position and velocity graphs. AP PrecalculusEnds and HolesZoom out to see why the leading term wins; zoom in to find a hole. GeometryAngle PairsComplementary, supplementary, linear pairs, and vertical angles, with practice. GeometryLogic LabConverse, inverse, contrapositive, biconditionals, the laws of logic, and proof reasons. GeometrySlopeTurn a line and watch its slope: positive, zero, negative, undefined. AP PrecalculusPascal's TriangleBuild the triangle row by row, then read off the binomial coefficients. GeometryPerpendicular SlopesTurn a line and its perpendicular partner: the slopes always multiply to −1. AP PrecalculusSequencesEqual jumps on a number line, and a ball that keeps 80% of its height. AP PrecalculusEqual StepsSame two points: the line adds the same amount, the curve multiplies by the same factor. GeometryLinesSlide m and b; draw parallels and perpendiculars through a point; graph from standard form. GeometryOnly What's GivenA figure that looks isosceles: which conclusions survive when it is not? GeometryLinear PairTurn a line: a congruent linear pair snaps to 90°, and adjacent congruent angles do not. GeometryRead the ScalesCount boxes or read the axis units? Plus a break-even explorer with two cost lines.