3x + 7x + 3x + 7x = 360°
20х=360°
360:20
х=18
3•18=54
7•18=124
3x+7x+3x+7x=360°
20x=360°
x=360°÷20
x=18°
3×18=54
7×18=126
54+126+54+126=360°
360°=360°
3x + 7x + 3x + 7x = 360°
20х=360°
360:20
х=18
3•18=54
7•18=124
3x+7x+3x+7x=360°
20x=360°
x=360°÷20
x=18°
3×18=54
7×18=126
54+126+54+126=360°
360°=360°