Question

precizeaza in care din urmatoarele cazuri punctele a , b si c dinstincte doua cate doua sunt coliniare : a) AB = 5 cm , BC = 3 cm , AC = 8 cm b) AB = 2,3 cm , BC = 17 mm , AC = 0,3 dm c) AB = 3 supra 5 cm , BC = 1 supra 2 cm , AC = 1,2 cm . plz dau coroana

Answer 1

 AB + BC = AC (COLINIARE)

A ) 5 cm + 3 cm = 8 (Adevarat)

B ) 2.3 cm + 17 mm = 0.3 dm

     2.3 cm + 1.7 cm = 3 cm

     4 cm = 3 cm (Fals)

C ) 3/5 cm + 1/2 cm = 1.2 cm

     6/10 cm + 5/10 cm = 12/10cm

    11/10 cm = 12/10 cm (Fals)