b = N[20/7]; d = 22.4; f = 18.666; h = 20;
b=b*10; d=d*10; f=f*10; h=h*10;
P1 = {Yellow, Cuboid[{{0, 0, 0}, {h + b, -b, b}}]};
P2 = {Yellow, Cuboid[{{0, 0, 0}, {b, -h, b}}]};
P3 = {Yellow, Cuboid[{{0, -h, 0}, {b, b - h, f}}]};
P4 = {Yellow, Polygon[{{b, b - h, f}, {b, -h, d}, {0, -h, d}, {0, b - h, f}, {b, b - h, f}}]};
P5 = {Yellow, Polygon[{{b, -h, f}, {b, -h, d}, {0, -h, d}, {0, -h, f}, {b, -h, f}}]};
P6 = {Yellow, Polygon[{{0, b - h, f}, {0, -h, f}, {0, -h, d}, {0, b - h, f}}]}; 
P7 = {Yellow, Polygon[{{b, b - h, f}, {b, -h, f}, {b, -h, d}, {b, b - h, f}}]}; 
S = Show[Graphics3D[{P1, P2, P3, P4, P5, P6, P7}], AspectRatio->1, Boxed -> False, Axes -> False];

S1=Show[S,ViewPoint -> {-15.5686, -8.31287, 13.0176}, ViewVertical -> {-0.0952918, 0.0312199, 1.01538}]
S2=Show[S,ViewPoint -> {-12.6367, -10.9719, 14.173},  ViewVertical -> {-0.0175869, 0.0188628, 1.02011}]
