## Select a standard

HSG‑GPE.A.1 Derive the equation of a circle of given center and radius using the Pythagorean Theorem;...
HSG‑GPE.A.2 Derive the equation of a parabola given a focus and directrix.
HSG‑GPE.A.3 $(+)$Derive the equations of ellipses and hyperbolas given the foci, using the fact that the sum...