👤


AJUTOOR
GEOMETRIE
PATRL = PATRULATER


AJUTOOR GEOMETRIE PATRL PATRULATER class=

Răspuns :

suma unghiurilor unui patrulater convex este de 360°
S=∡A+∡B+∡C+∡D
∡B=2A/3
∡C=A/6
∡D=5B/4=5/4 x 2A/3
S=A+2A/3+A/6+5A/6=(6A+4A+A+5A)/6
360=16A/6
∡A=135°
∡B=2 x 135/3 = 90°
∡C=135/6=22,5°
∡D=5 x 135/6=112,5°