Explain the importance of caster, camber, and toe angles in wheel alignment.

Caster is the angle of the steering axis from vertical (viewed from side) - positive caster improves straight-line stability and steering returnability. Camber is wheel tilt from vertical (viewed from front) - negative camber improves cornering grip but causes inner edge wear. Toe is the angle between wheel centerline and vehicle centerline (viewed from above) - toe-in improves stability while toe-out improves turn-in response. These angles interact and must be optimized together.