Top: Earth's axial tilt (obliquity) is currently about 23.4°. To understand axial tilt, the قاعدة اليد اليمنى can be employed. When the fingers of the right hand are curled around in the direction of the كوكب, the thumb points in the direction of the north قطب جغرافي.
Bottom: The axial tilt of الأرض, أورانوس and الزهرة. It is the angle between the تعامد to the مسار الشمس (vertical black line) and the planet's rotational north pole (red line).