Question

In triunghiul TLE,se iau punctele A€TL, S€TE,astfel incat AS||LE.
a) Daca TA=10,TS=15,SE=6, AL=?

Answer 1

teorema lui Thales
TA/AL=TS/SE
10/AL=15/6
AL=10x6/15=4 

Answer 2

conform teoremei lui THALES: TA:AL=TS:SE, adica ALX15 VA FI EGAL CU 60 => AL=4 CM