As shown in the figure, in square ABCD, P is on the diagonal BD, e is on the extension line of CB, and PE = PC, passing through point P as PF ⊥ a in F, and the straight line pf intersects AB, Cd in G and h respectively. (1) prove: DH = Ag + be; (2) if be = 1, ab = 3, find the length of PE

As shown in the figure, in square ABCD, P is on the diagonal BD, e is on the extension line of CB, and PE = PC, passing through point P as PF ⊥ a in F, and the straight line pf intersects AB, Cd in G and h respectively. (1) prove: DH = Ag + be; (2) if be = 1, ab = 3, find the length of PE

Angle AGF and angle BGP are diagonal, so they are equal - and angle AGF + fag = 90 degrees, angle BGP + HGI = 90 degrees, so fag = HGI, triangle Abe, GIH are congruent. Be = IH. So DH = Di, IH = Ag be