DES Science s". 85 



'MIV=CO= DP Cm. tot.= a MN. MK::AL. A H. 



MK=b 

 fin.3ing.LAE=g 

 £m,zng.HLC=h 



AC=l 



AD=m 



AM=t 



AL=x 



LC=LD=y 



C=D=dp 



bx 



a ' 



a. b :: X. 

 fin. tôt. fin. HLC: : LC. HG—HI 

 a. h :: y —, 



AG=AH^HG='-^ 



a * 



AC.AG..CO.CT 

 L'a 



-Ay b) 



• -.a.— 



■ hy 



a l • 



AD. AI :: DP. D F^ 



bx — hy bx — hy 



m. : : a. -• 



a m 



Sin. tôt. Cm, LAE .: AL. LE. 

 a, g :: X. ^, 



AC = AL -f- LC-^zCLE. 



Zd'= lÎL -4- TD -^ zDLE. 



mm = XX -h y y — ^g^J' 



A M. MK ::AC.CR.:AD.DS. 



f , bl bm 



t. b :: l. — :: m. -— . 



■ hy 



bl 



l 



RT=CT-^CR = 



Sy=DS-DF==^—^-^^^^. 



t m 



CxACx RT= dp X Ix t!L^ly __ :^ = bx-hky^ ÈlJ x dp^ 

 {ene([siç^mll) = bx-^ky- 



bxx- 



■hl^ltU^xdp, 



at ' 



DxADxSf^=dpxmii I^^ZÂÏ±El=, tH^ ^bx-+-hyxdp 



( en effaçant mm) ^^.^I^^^-^l^^bx-i-hyxdp, 



Lij 



