Question

In figura de mai jos punctele M,Tsi S sunt coliniare .Determina x.

Answer 1

M,T,S colin. => m(∡MTP) +m(∡PTR) + m(∡RTS) = 180°
x+20° + 2x+ x = 180°
4x + 20°= 180°
4x= 180°-20°
4x = 160°
x = 40°
m(∡STR)= x=40°
m(∡RTP)=2x= 2* 40° = 80°
m(∡PTM) = x+ 20°= 40°+ 20°= 60°