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AI/AC = AG/AF = GI/FC

AG/AF = GI/FC
244/97.6 = 172/FC
FC = (97.6 * 172) / 244
FC = 68.8 mm 

Périmètre ACF = 97.6 + 108.8 + 68.8 = 275,2 mm
Aire = (68.8 x 96)/2 = 3302.4 mm²

AI/AC = GI/Fc
AI/108.8 = 172/68.8
AI = ( 108.8 x 172) / 68.8
AI = 272 mm

Périmètre AGI = 272 + 172 + 244 = 688 mm

AH/AB = AG/AC = HG/BC
AH/96=244/108.8
AH = ( 96*244)/108.8 ≈215.3 mm

aire AGI = ( 172 * 215.3)/2 = 18515.8 mm²