[FIDOCAD]
LI 75 15 45 15 0
LI 45 85 75 15 0
TY 25 45 4 3 0 0 0 * L
TY 30 85 4 3 0 0 0 * b
TY 50 45 4 3 0 0 0 * h
TY 100 20 4 3 0 0 0 * h = 3b
TY 100 35 4 3 0 0 0 * L = b  +  h  = b  + 9 b  = 10 b
TY 103 32 4 3 0 0 0 * 2
TY 116 32 4 3 0 0 0 * 2
TY 133 32 4 3 0 0 0 * 2
TY 150 32 4 3 0 0 0 * 2
TY 173 32 4 3 0 0 0 * 2
TY 198 32 4 3 0 0 0 * 2
TY 100 80 4 3 0 0 0 * L + b = 32
TY 100 70 4 3 0 0 0 * L =  10  b
LI 110 70 115 75 0
LI 115 75 115 70 0
LI 115 70 125 70 0
TY 95 55 4 3 0 0 0 * Due equazioni due incognite
LI 45 85 45 15 1
RV 95 65 135 90 2
FCJ 3 0
LI 45 85 15 85 2
LI 15 85 45 15 7