Podoblasť: Geometria v rovineČasť: BProject ID: 2010014609Source Problem: 9000151301Accepted: 0Clonable: 1Easy: 0Určte uhol \(\varphi \) priamok \(2x +1 = 0\) a \(x - y + 7 = 0\).\(45^{\circ }\)\(60^{\circ }\)\(90^{\circ }\)\(30^{\circ }\)
