These cells contain the code to generate one of the schematics offered in the statement of the problem.

Input := 

p0 = ParametricPlot3D[{u,u,Sqrt[1 - u^2]}, {u,0,1},
	AxesLabel->{"x","y","z"},
	ViewPoint->{4.000, 0.730, 2.030},
	AspectRatio->Automatic]

Input := 

p1 = ParametricPlot3D[{Cos[t], 0, Sin[t]},{t,0, Pi/2},
	AxesLabel->{"x","y","z"},
	ViewPoint->{4.000, 0.730, 2.030},
	AspectRatio->Automatic]

Input := 

p2 = ParametricPlot3D[{t+1,Cos[t],0},{t,0, Pi/2},
	PlotRange->{{0,3},{0,1},{0,1}},
	ViewPoint->{4.000, 0.730, 2.030},
	AspectRatio->Automatic]

Input := 

p4 = Show[Graphics3D[{PointSize[.02],
	Line[{{0,0,0},{1,1,0}}],
	Line[{{1,0,0},{1,1,0}}],
	Line[{{0,0,0},{3,0,0}}],
	Line[{{0,0,0},{0,0,1.2}}],
	Line[{{0,0,0},{0,1.2,0}}],
	{Thickness[.01],Line[{{1,0,0},{1+.7,0,0}}],
	Line[{{1+.7,0,0},{1+.7, Cos[7],0}}]},
	Text["P",{1,-.05,0}],
	Text["V",{1.8,.04,0}],
	Text["O",{-.02,.03,.03}],
	Text["M",{.97,1.02,.03}],
	Text["N",{1.65,Cos[.7],.03}],
	Text["(x,f(x))",{1.80,Cos[.7] + .08,0}],
	Text["B",{0,.03,1.02}],
	Text["C",{1 + Pi/2+.02,.03,0}]},
	PlotRange->{{0,3},{0,1},{0,1}}],
	DisplayFunction->Identity]

Input := 

statementPlot = Show[p0,p1,p2,p4]