+5 In the diagram below, is a square. Find x[asy]
unitsize(1.5 cm);
pair A, B, C, D, P;
A = (0,3);
B = (0,0);
C = (3,0);
D = (3,3);
P = (0.8,1.8);
draw(A--B--C--D--cycle);
draw(A--P);
draw(B--P);
draw(C--P);
label("$A$", A, NW);
label("$B$", B, SW);
label("$C$", C, SE);
label("$D$", D, NE);
label("$P$", P, NE);
label("$1$", (A + P)/2, NE, red);
label("$2$", (B + P)/2, SE, red);
label("$3$", (C + P)/2, SW, red);
label("$x^\circ$", P, W);
[/asy]
