angles in a triangle add up to 180 degrees
constructing an equilateral triangle
constructing a parallelogram with a given angle and with an area equal to a given triangle
getting the standard form equation of a parabola from the focus and directrix definition
axis of symmetry of a parabola
vertex form equation of a parabola
getting the focus, directrix and the vertex of a parabola from y = ax2 + bx + c
the reflective property of a parabola
the equivalence of the focus-directrix definition and the conic section definition of a parabola