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in triunghiul echilateral MNP,MN=36 cm,iar T e (NP) si Q e (MN) astfel incat [NT]=[PT] si TQperpendicular cu MN.Determinati masurile segmentelor NQ /MQ/ MT/ TQ

Răspuns :

ΔMNP echilateral⇒ MN=NP=MP =36 
∡M≡∡N≡∡P=60°
NT=TP=36:2=18cm
in Δ NTQ dreptunghic : ∡N=60°⇒∡NTQ=30°
T∡30°⇒ NQ=NT/2=18:2=9cm⇒ NQ=9cm
MQ
=MN-NQ=36-9=27cm
TP⇒ TQ²=NT²-NQ² = 18²-9²=324-81=243⇒ TQ=9√3 cm

MT⊥NP⇒ MT - inaltimea in Δ echilateral ⇒ MT=36√3/2=18√3cm